10-26 Exercise 3: Find roots of a quadratic equation

0 like 1 dislike
18.5k views

Write a program to find roots of a quadratic equation

A quadratic equation is a second order equation having a single variable. Any quadratic equation can be represented as where a, b and c are constants ( a can't be 0) and x is unknown variable. 

寫一個找二次方程的求根程式

For Example

 is a quadratic equation where a, b and c are 2, 5 and 3 respectively.

To calculate the roots of quadratic equation we can use below formula. There are two solutions of a quadratic equation.

使用下列公式:

x = (-b + sqrt(D))/(2*a)
x = (-b - sqrt(D))/(2*a)

where, D = (b*b-4*a*c) is Discriminant (判別式), which differentiate the nature of the roots of quadratic equation.

For the complex result (複數根):

realPart = -b/(2*a);
imaginaryPart =sqrt(-D)/(2*a);

Note: We have used sqrt() function to find square root which is in math.h library.

 

Example input 1:

1 2 1

Example output 1:

Roots of 1.00x^2 + 2.00x + 1.00 = 0 are real and same
x1 = x2 = -1.00

 

Example input 2:

1 -3 2

Example output 2:

Roots of 1.00x^2 + -3.00x + 2.00 = 0 are real and different
x1 = 2.00
x2 = 1.00

 

Example input 3:

1 2 2

Example output 3:

Roots of 1.00x^2 + 2.00x + 2.00 = 0 are complex and different
x1 = -1.00+1.00i
x2 = -1.00-1.00i
[Exercise] Coding (C) - asked in Chapter 5: Selection Statements by (5.2k points)
ID: 28934 - Available when: 2017-10-26 18:00 - Due to: Unlimited
reopened by | 18.5k views
0 0
We will continue this question in few days
commented by (12.1k points)
0 0
Everything is fixed. Enjoy your time with The Judge :)
commented by (12.1k points)
0 0
ANNNNNNNNNNNNNNNNNNNNNNNNNNGRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
commented by (-249 points)
0 0
Your code has newline at the end sometime. You learned this lesson many times!
commented by (12.1k points)
0 0
After i correct the newline in my code,there is still wrong output.However,I had run the program in Codeblocks.The output is still as well as the result. Seeking for help.
commented by (-214 points)
0 0
your output lack of 1 space at line 8 when print out "Roots of ...". Please be careful with all small details when working with online judge
commented by (9.9k points)

56 Answers

0 like 0 dislike 
Hidden content!
 ** **  * *** *** * 
  ***  * *   **        
int main()
{
*    * * * * ** * * * * **    a,b,c,D = 0,x1 = 0,x2 = 0,Real = 0,imaginary = 0;
** * **  * **      * ***** ** * ** *  * * **  ** * * ********    **

*  **  ****  * ***** *  **  **   *  *  ** * of %.2fx^2 + %.2fx +%.2f = 0 are",a,b,c);
**    ** **** *   *** ** *  = (b*b-4*a*c);
**      * ** **  ***** ** ****** = (-b + sqrt(D))/(2*a);
*     *   **   * **    *   = (-b - sqrt(D))/(2*a);
  *** **  **   * ***   **  * (D < 0)
*  *    *    ** ******  * *   *    
 *      * **  * * *  *   *  *   ** * **** complex and *  * ** *** * *
*  ****  *****   ** * *   ***    **   **   =  *   * ***    * *** * *** **  *
   *  * * *   ****** **  *** **  *** ** =    *  * ******   **      *
   * ***  * * ****   * *  *****
*** **** *** *   **   ****  **** (D > 0)
   ******     ** * *   * ** * 
*   *  ******  *   *** *   ** *   **  real and * *      * ***
* ****   ***  **   **     *     **  **  = *    *** * * *** 
 * ****        ****     ***       = %.2f",x2);
 *  ** ** ** * *** * * * *  
* * *     ***** **    *  (D == 0)
    * * ********** ** *  *    
* * **  ***  **    *    *** *  *  ****   real and same\r\n");
  ***  **  * *  * *   *  * *  ***  * *   ** = x2 = %.2f",x1);
 ***    **   ** ***  *** ***  
}
answered by (-214 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
   *** ***   ** *** 
int main(void)
{
* * ** *     * * **  *** ** * a,b,c,D = 0,x1 = 0,x2 = 0,Real = 0,imaginary = 0;
***  *    *      ****  *  ***   ** * ****   **** **** *  * ***  * ****** 

  **  ** * *  ** * *  *      *   *  *      ** of %.2fx^2 + %.2fx +%.2f = 0 *   * ** **  *
*** * ** *     * ** *****  * = (b*b-4*a*c);
 **  ***  * * ** **   **       = (-b + sqrt(D))/(2*a);
* *    **  * *   * * *    ** ** = (-b - sqrt(D))/(2*a);
**     ***   *  ** * * *     * = -b/(2*a);
* ** **    * ***** **   ** *  ****  * = sqrt(-D)/(2*a);
***   *    *  *  *  *     *    * * (D < 0)
*  *  *      *     * **        
 **  ** * *** *  *** * ** * *   * *    complex and   * *** **  *  
**   *  * *** * ****  * * * *** *    * *  =     *   **  * ** **    *  *  
 * *  **** * *  *  ***     ***  ***  *** = **    **     **  * *  *  *
** *  ****** * *****   *    ***
  *  *** * * *       * (D > 0)
* *     *  *** *   * ** * *
     *  * * *  * *  *** **  *  * *  *  *   ** * real and    *  * * * **  
* *     * * * *  *     *  * *    ***  * *   * =  ** ** *   *     
 **** *   ** * *  ** *   * *** *    **  = %.2f",x2);
  * * * * ***** **    ** * ** 
***  ***   * *** ** ** *    *  (D == 0)
 ** ***   * *   ****       
*   * *  *** *      **  ***** *   real and same\r\n");
*    *  **  * * * *  ****  * ****  *    = x2 = %.2f",x1);
**  *  * *** * ** * ** *   *
}
answered by (-214 points)
0 0
prog.c: In function 'main':
prog.c:9:16: warning: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
     x1 = (-b + sqrt(D))/(2*a);
                ^~~~
prog.c:9:16: warning: incompatible implicit declaration of built-in function 'sqrt'
prog.c:9:16: note: include '<math.h>' or provide a declaration of 'sqrt'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
*  *** * *  *** 
#   *  * *  ***  * * * *
int main()
{

     ** * * **  *     *  *      **  *** **** * ****  *  *
**         * * ** *  *****   **  * *** *   * %f *****  **** **     ** ***********
*   **   **   * *   *    *   *   * = (b*b-4*a*c);
**   *  ** * ** *   *******  * = (-b + sqrt(D))/(2*a);
*  ***  **** ** ****** *      = (-b - sqrt(D))/(2*a);
* **** *  *    * * * *      * ** ** **
 **    * ** *****  *****  **
* **  **** *  *****    ***  *  **** **** *** *  * *   *** = -b/(2*a);
**  * *   **    *  * *** ** **     **** **   *  * * *****       =sqrt(-D)/(2*a);
 * **** * *****   * ***** *      * **     * * * *  *     * *** *   * *  of %.2fx^2 + %.2fx + %.2f = 0 are complex and  ** ****  *   *   *
*** *** ** * *******  *** *    * *   **** *** ** **   **   ** ** = %.2f+%.2fi\n", realPart,imaginaryPart);
* *  ** * * *     *  *   *  **  ***     **    * ** **    ***  *     ** * = %.2f+%.2fi", ***  * ***  **** 
 *  ***** *      ***  **** *
**   *** **  *  *  *  ** ** *** if(D == 0)
**** ****    * ** **   *  *

 * *  ** *** * * * *  **   * *** *   *       **  ** *   **  *** of %.2fx^2 + %.2fx + %.2f = 0 are real and **  *   **  **   
 *** *   ** *** *****  *  ** *  **  ** ** *  ******** * *        * ***  *   = x2 = %.2f", x1);
  *** *  ****    * *** **  *
**** ***  *  ****     *  *  * 
  ** *  * ***  ** *   *** ***
 ** *        *****   * * *   ** **   * ** **  *   *** *  * *     **  **  ** of %.2fx^2 + %.2fx + %.2f = 0 are real and *** * ***   *  ****
***   *  * ** * *   *    ***** **  *  **** *** **** * ** *** ***  * = %.2f\n", x1);
 *  ** *         *  * *** *** * ***** *** * ** * * * *      * = %.2f", x2);
****   * ** *  *******  *  * 
* *     *  **** **  *  ***   0;

}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
 * ** *  ** **  **
# *  * *   *   ****** 
int main()
{

   ** **    * **  * *  *** * * * * *  ** ** ** * **  *
 ** **** * ** **  * **  * **  *   **** %f  **  ** * *   * **   * *    * 
****  * ****  * *    ** *** = (b*b-4*a*c);
 **  *** * **  *    *** **  *  * = (-b + sqrt(D))/(2*a);
* **    *** ********** = (-b - sqrt(D))/(2*a);
 * **  *** *     **** **   *** *  *** ** * 
**  *** ** **  ** **     *    
*      * *  *** ** * *** * * *  **  * *****    ***     *  = -b/(2*a);
** ** **** ****  ****      * * **  *  ** * *      * *   *   *  *   ** * =sqrt(-D)/(2*a);
  * ** * * **** **    **       **   ** **   * **   ****  ** *   *  *  of %.2fx^2 + %.2fx + %.2f = 0 are complex and   *    ***** ***  * **
** ***** * ** **** **** **  ***  ***  * **** *** * * **** * **   **  **** * = -%.2f+%.2fi\n", realPart,imaginaryPart);
   *   ***** *  *  ****  ** ** * *** ****  **  *** *  * * ** ** ** = -%.2f+%.2fi", *   ***    * **  **
* * * **  ***   ****  ***     **
  * ** * *** * * ** ** * ** **  if(D == 0)
**   * ***  *** *   

****  **  *   ** * *** ** * *   * *     ********  *   *  * * *** of %.2fx^2 + %.2fx + %.2f = 0 are real and *  * ** ***  
*  ***    * * * ** * ** ****    *** *******   ** *   * *  **  **** = x2 = %.2f", x1);
*   ** *   ** **  *   *  *
* *  *  *** * *   *   **  * * 
 * * **     ** * **  *  
 * **    *  **** ***   * * * *** *** * ***** ** ** *     **** **  * *  * ** of %.2fx^2 + %.2fx + %.2f = 0 are real and *****  ******** ***  **
* **** * *     *** **** *         *     *   * * ** ***** **  ** ** ****    = %.2f\n", x1);
*  *  * **  ** ** *****  **** *   ****** ***  **  *     *******   *****  = %.2f", x2);
  *** * * *** ** * ******  
* * *** * *** * *  * * **  ******  0;

}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main(void)
{
 ****  ***   *   * * ****  *  *  ** * a, b, c, D, spD, x1, x2;
    
  **          ** * ****  **     *** *** %lf %lf", &a, &b ,&c)==3)
    {
*  ***** *  *      *   * **  * * *** *   *  **    *   *  - (4*a*c);
* **   *  ** ***  **      ***  *   * **   * **** 
*  **  ***  * ** *** **  **  *        ****   *     *  ** ** ***
   ***  * *  ** **   * * ** * * *** *** ***** * ****
**  * ***    * * *  ***         **   * *   * * **  * *  **    *****    **  *** *  **** 
* **  * ***  **   ****  ****       *   * * * ****   *  ******** *** ***   **   **  * (-b+spD)/(2*a);
   *   *    * *  *  ***   * *       * ** * *  **   ***  **  ***   * ***  *    *  * * * (-b-spD)/(2*a);
*   *  * * *** **   * * **    * *  **    * ***** *** ** * ***  *** * **  **  *  (x1==x2){
 ** *** *     * ** *  *      *  *** ** *  **  **** ** ** **** ****  ** ** **    **  ** * *  * * **  *       * **  *   ****  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
 *    *** *   ***    **     ***   *   ** ******** ** *  *** ***  *   **** **  
**    * *   * **** *  * * ****  *  *   *    ****   ***** *** ***** *   * ** * *   {
    * *** **     ** * *   *  ****   **  * ** **    **  *  * *** *    *  **  * *  ****** *  *  * *******  *  ** * **         *  * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
  ***   *   *  ** *     * *** ** ** *  *     **   **** **  ** * ** * *   **   * * *
 ** ****** * **  *  *** **    ***** ** *** *** *     
* *  * *  * ***** *        ** * *   ***   *   **  * *  * if(D==0)
****** * *  ** **   **** * ***** *****   *  **** * *
* *** **  ***** * * ***    **   *    * *** **  *  * **  * *  * *** **  *   ** *** * (-b)/(2*a);
*  * * ** ** * *  **      **** *  ** * *  ***  *       *   *******  ***  *  * ** **  *   ***   *
* *      * * *** ** * *  * **  ******  *   ******** **  *  * *  *   ***      
 *  * ** *  ** ** **   * ***** *  * * *** * * *** * ****   * **  *       ***  *     * ****  *  *   of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
**    *** *    **** **    ** ** **     **  ** * * *      * **   ***    **    *  **
  * *****  *   * ** **** **  *** **** *  ** * *  * *  * ***** * ***      ***  * ** ** *
 ** * * ** ***** **  * *  ****** *  ****  *  * * **    ****** *   *  *****   ****   ****  
******* ** * *  *** *  ***  * **     *  * *   ** ***   *  *  * *  * *  ** **** **  ***  
**   * *   ****  *  *   ** ** ** * * * * ****    *    ****** *   * **  ***   * ** * ** * ** *   * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
*  * *   **   *   **      **   * **    **  ***** **** ** **** *** *       *** **  *
 ****** * **  ** * **   *     **** * ** ** ** * ***   
   **  * *   ******* *    ** *    ** **  *  *     **   ***  if(D<0)
** *****   **    **   ** * * * * *   *** * *  *     **      *    
 *  *    * * ** *********   *   ** **  ** *   ** ****** *    * ** ** *    *****  * *  (-b)/(2*a);
   * ***  *  * * * *** ***** *** *** * ***  ***** * ** ****   *  **** **   *    ** **** **  -x1;
**** **     * *  ***   **** **  * *  ***  ***    **  *  ** *  * * ***   ** *  *  ** ****  of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
** * * * * * *   ***   *   *  * ** *  * * * **   *
* ** *** *******  ** ***    * 
    
*  * *****  **  **    * *** *  * * ** * ** **    *
 **   * * * ***  * ****  * **  *    0;
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdlib.h>
#include<math.h>

int main(void)
{
* ****   *   *  **  **  *   *  a, b, c, D, spD, x1, x2;
    
   *  *** * * ****  * * *   * **  **** **** ** %lf %lf", &a, &b ,&c)==3)
    {
***  ** *  ** *  *    *** *** **** **  * ***   *   ****  * *   - (4*a*c);
*** * *  ***** * ** * * *****       ** * **  *    
 ** *     ***  *********  * * * **   **  ** ** ***  
  *     **   *  *  ** * *** *  **  *  ***  * *  *  *** 
 *** **     *  * ** * *  ** * * ** *** ****      ** * * *     **  * * ** **    *  * ** * 
* *****  * **   *  ** * *****************  ****   *  ** * ** *   * * ***     (-b+spD)/(2*a);
     * *   **  *** ********       *  * **    *  * ** * **    *  *******  * * *** **** (-b-spD)/(2*a);
    *  **  * ** *** * * **   **** *   ***    ****   *****  *  ** **  ** * **     *** * (x1==x2){
 *****   **  **    *    ** * * *** * *******  *  ** * ** **  * * **   * * ********* *  *******  *    *** **** ****    * ** ** ***     of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
 * *  *  **** *   *****   *  ***   * * ***  * * *   *  **  *** * **  ***  * * * * ** *
  * ** *   *  *     ** * * *     *  ** ** * * **  *     *******     * *  *** {
* * *   ** **  *****  *   ***  *  *** ** **  * * ** ** *  *   *  ** **   * *****    *  **  *****   ****   * * *** * * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
*  * * ** ****** ****  **  * **** **  *    * ***  **** ** *****  * **  *  ** * *****  **
* * ***    *  *   *     *** *    * **  *   *  *****   * *   
 *****  ** *  ******  ***  **    ** *** * *  **  *      if(D==0)
* * ****    *  ***   * ******  * **  *  * ** ** *
  ** * *****   * *  * ***  ** * * * ** * *  **     *    * * *** *    * * ******  **** (-b)/(2*a);
   * *** *  **** ** * ** ****** ***   * *   *     *   * *  *** * *   *****  ******   **
***   *     **  * **    * ** *  * *  *  * ****  ** **  ** ** *****   ** **    *
    ***** *****   *  **  * ** *     **    **    * ** **  *    ***   * * * *  ************ ** * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
 *     ** ** ** *  ******* *** **  *  ***  *  ***  *  **  ** **        **  *** ***
 * *** *  **  *** **        * *  *  *  ***  * * *******   ** ******* **   **      *    * 
* ** * ***** **** *****    **  *  *** *    ** *  **  ** * ** ** ** ****      *******
  *    ** *** *** **  ** * * *     *   **   * *  **** ***      * ***      **   ***
***** *****  **  *** * *** ********  * * * *  **** **   **      * * *  *         * *****  * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
  *  *  * *  *  **   * **  **  *    *   * ** ***  * ** *   * *  ** * * ** **       
***** * ** *  *****  *** ** *  ** **  **   **** * **   
* ***    *  *  *             *  *  **   ** ***  *     * ** * * if(D<0)
         **  ** ** ***    ** ***  **  ** *  ** **  **  ** ***     
  *  ** **  ** *   **** ** *** *** **** * **  *** *  **   * *    **  ***      ** (-b)/(2*a);
* *          *  * *  *   **  ** ** * **    **  * *   *   *******    * *    ** -x1;
 **  * *  * **  ***  ****** * *  **** *  *  * *  *  *** *  *    * * * **  ** *   ** * ****  ***     * of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
*   **   ***   **    * **  *** *     ******     *****
* *****  *      ***    ** ***
    
  *** *      * *   **  * *  ** **    * **** ** *** **
 ** ** *  *    **   * *  ***   0;
}
answered by (-249 points)
0 0
prog.c: In function 'main':
prog.c:8:11: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
     while(scanf("%lf %lf %lf", &a, &b ,&c)==3)
           ^~~~~
prog.c:8:11: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:8:11: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:18:17: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
                 printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
                 ^~~~~~
prog.c:18:17: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:18:17: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:21:17: warning: incompatible implicit declaration of built-in function 'printf'
                 printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
                 ^~~~~~
prog.c:21:17: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:29:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
             ^~~~~~
prog.c:29:13: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:34:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
             ^~~~~~
prog.c:34:13: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:41:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
             ^~~~~~
prog.c:41:13: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main(void)
{
* *  ** * * ** *** **  * **    a, b, c, D, spD, x1, x2;
    
*       ***  *  *     *  ** *** *    **** * * *   %lf %lf", &a, &b ,&c)==3)
    {
***  *     * ** *       *  *     ** *  *****   ****  * **  - (4*a*c);
** *  * *** **** * ** *** *     * ** *** *    ** **** *   **
*  *  *   ** *     ** * *** * *  *** *   **  **** ***  * *** * ** 
  * ** ****** **   *** ** * *   ** *** *****  * *  * **
   * *  * ****      * * *  *** ** **** * * * **  ***   **   ***  ****  * * **** *** * ***
**  ******     * *     *  ***** * ******  *  *  **   ******   ** *  *  *  ***   * ** (-b+spD)/(2*a);
 *   *   ** *** *    ** * *     *  *** *  *    *  * *   **  * *     **      * *****  (-b-spD)/(2*a);
* *** **     *     * *  ****    ****   *  **     *         *   * **** **** * * (x1==x2){
** **   * **   *   *** * ***** * ***  * *   ** ** *** * ** *   **  ***   ** * * *   ****  ****  **   *  ** * ***  **     ** * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
 *     ** * ** * *   **  *   * **** *    *  * ** * * *  **** *   *      
 *** ******  *** * *    *   ** *  * * ** **   * *** * **   *  *** {
** *     ** ** *****  * * * ***  *****    **** * ***   **** * **   * * * * *****  ****   ****  * *    ***  *** **  **  * ***     of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf\n",a,b,c,x1,x2);
**   *  *   **      **** ** * ** ***      * *** * ******* ****   * *  *  ** **  *
 *** **    *  *      * * *** **** *  **** ** **** *
* * **   **   * **  ** * **** * **  *     *      * **   *   if(D==0)
***  *****    * **       **  ***  **   *****  *   
    * * ** ***** *    *   ** *   *  *** ****** **** ** ****  ** ** **    *  * *** *     (-b)/(2*a);
***  ****  * **   *** * ** **   **   *****  * *** *  *  *****  *    *     *  * * *  * 
 * **    *   * **   * * * * *   *   *  * *  *  *    * *** *****   ***** ** *      *
  *      *   * *   ***  **    ** ***** *  ** ** ******** ****    **** **     **  **       ****   **    *  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
** ** ** ***** ** **  *    ****** *  **  * ****** *** ***        * ** **  **  
  ** **      ***** *** * * *    *     **   ** * ***   **   *  *     **  *     * **  *
*      *    **** *     ** * *** * **   ******* *** * ***   * *   *** **** **** *   *
* **** * ***** *   *  *         **   **   * **   ** **  ** **  *  ***  *  *    
 *   *  * *** *    *  **** *** *  * **  **  ***    ***  *   **  **  *  ****  *****  *  *  ***  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
*   ***  *  *  * *      *  ***** **  *   *  *  *  *  **  ** * ****   **  * *   * ** **
 *******   **   * ** ***    * ***  *  *** *  * ***  ** *
* *       *  * *** *****  ****    ** **   **** *** *  *  *  if(D<0)
** *  ****      * *  *      * * *  * * *   *****  *** *    
***    ******    ***     ****  ****  *   *  *   ****  ***   * *  **      ** * * (-b)/(2*a);
****   *   * * * *  *  *   * **    *  ***   ** ***  *  ** **     ***  **  * * ***  -x1;
* **   **    ***  *** *** **  *   * *** * **    *    * * * **** **** * **  *    *   *  ***  **  **   of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
   * * *   *** *   **   ** ** *    ** *  *    * ***
** ***** **         ***  ** **
    
 **  * ***   *** * **  *** * * *       *  ***** *  
 *    * *   **    ***     *  0;
}
answered by (-249 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
  *** *  *         *  **
* ** ** * * ** *        *  *
 *** * ** *  * **   
int  *     
  * *    ** *  * ** *    * *    ** a, b, c, D, spD, x1, x2;
**     ** ***    *   ******  * 
    *    **   *** *    * *  ****** * *      %lf **** *   ****   &b *  *   *** **
*  *** **   {
* * *  * *  *      * *  * *  * * *    * ** **** ***    - (4*a*c);
** *   *   ** ** * * ***** **** ****    * *** **   * **  **
   **          *    *** 
 *   * **       {
      ****      ****  **   * * *      * * ** ** ** *  ***  **   ** ** *
  *  *   * * * * *    *  ** *  ***      *  *        *  ** * *  * *    x1= **  ***   
* **  ** * *****  * **** * * * * * *   ** * * *****  * ****     x2=     ** *  
** **    *   ***  ** **** *  *  ****  ** *      *  *   **  *   if (x1==x2){
**       *  *  *   **  ** **  * ** * ***   *   * * *              **** **** **  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 =   * *  *   **  *     **
 **  * * *  **    ** ** *  *** *   * **** * ** **    *** * *  * *** ** *     **
 **   * *  * * ***   *  *   ****   *  *   * *  *** * *  ****    else {
*  *  *    **       *  ** *     * * * *  *    * **  ** ****   *   **  **** *    *** **** **  * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and  ***  = %.2lf\nx2 = *  ****** *** ***** *
  ***     *   *  * **  * * *** *   * *   * **   ***   **      *** }
  * *** *     * *   *   * ***** ** *   * *   * * **  
 ***   ****    *   ***** ******  * * *** *    * *  ***   * *       if(D==0)
 **  *  *  *  ***       {
 * ***  * *   * **  ** **** *  * **** **   **  ***  ***** * *** *   **   * * ** **     *    
   * * *   *  *  * *  * ***  *    ** * *   **  ****** *** *** ** ****** **** *** * *
 **  * *     * *          {
  *     **  * *   *    *  ** ** *******  *  *   **   *  ** * * *****  * ********  **** *** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 =  *  **  * *  * **   
**  ****** ***    ******  *  *      **  * **      **  ******** ** *** ***** **** 
** *** ***     * * ** ***** * * ** * **  *  *  *   **    ** **** *     *** * **   **  ** * 
  **** *  *    ** *    *****   * * ** **  **  *** *  * * **  *** ****      * **   ** * *
    *** **           {
*   *   *** ****      ** ** ** ***  * **** ********** *  *   ** ***   * ****  ** **     of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 =    **  * ** ******
*      **   * * *   ***   *  ***   *   ** *  **    *** ***   **  * ** ****     ****
    *****   * * * * * *    **** * **   * *  *    
 * * * *  *   * ****     *  * * ** ***** * ***  *  * * ** **** ****** **
** *** *           ***    
            x1=   **
**     **           ***      **   **** x2= -x1;
* *   **    * *  ***  * *** * **  **   *** * * * ** ****  * ***** * *   * * *  *****   *  ***  of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and    * *  ** =    * * *   =  ***** * **  ****** ** **
 *  *    * *** **  * *   *   *   **  ***  *   ** ***  ***     
**** **         *  *** * *   * 
   **** *  **   **  *   *    *
       ** * * *** *   **  **       ** * *   *  **** *  
**      * * *  **   * * * ** 0;
}
answered by (-249 points)
0 0
/tmp/ccvUqbC2.o: In function `main':
prog.c:(.text+0x6e): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
**   ******* ****  
 ** **     *    ** *  
int main(){
** **     * *** *  *  *       *  a,b,c;
* ** **** *  **  *  ** ** * D;
* * **  ** *  **  **  ***   ** *** *     %lf *****       *  *** *** *     ** **
********** **** *   ****    * ** *  - 4*a*c ;

** * **    * ***   ** ** *  ***** *    *  *** of %.2fx^2 + %.2fx + %.2f = 0 ***  * ** 

 ** *  ***** ***    *   **  *    
** * * * ** **** * ***  * ** * **     *** * *** *** ***  **    complex and ****** ******* * 
 *  ** ** *   * *** **   **  *  ** ***  *   ******    ** ****  *  *** = *  **     *  ***** (-b) / (2*a) ), sqrt(-D) / (2*a) );
**** * * **  **  ***  *** *   *     *     *  *    *** ** *    *  **  =  *  *   ****** *  (-b) / (2*a) ), sqrt(-D) / (2*a) );
****  * * *       *  *  ****  **  
 *  **  * *  **    * *    ***** if(D==0){
 *  *     *** ** ********    *  *  ****   *** * **  **  **   *****   real and same\n");
 *   **    ****  * *** ** * ***  *** * **   ** * * *   *  **  *  ** = x2 = %.2f",( (-b) / (2*a) ) );
** *  ** ***   *  ** ***   
*  ***   * ** * * ** *   *    *   **
*     * ***   * ***** ****   *  *  * ** **  *  **  * *  *** real and  **** *  ** **
  *  *  * *** *  ***** **  *  * *** *  *  *   * *     *   ***** *** *  = %.2f\n",( ((-b) + sqrt(D)) / (2*a) ) );
*  **  *  *  **** ** * *    * **  **   *  **  * *** * **    ** = %.2f", ( ((-b) - sqrt(D)) / (2*a) ) );
  ** * ****      ** *  ** 

*    ******** *    ** ***** **    0;
}
answered by (-116 points)
0 0
/tmp/cc8OPUJA.o: In function `main':
prog.c:(.text+0x51): undefined reference to `pow'
prog.c:(.text+0xdd): undefined reference to `sqrt'
prog.c:(.text+0x13f): undefined reference to `sqrt'
prog.c:(.text+0x213): undefined reference to `sqrt'
prog.c:(.text+0x26a): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
/tmp/ccLeUfQ5.o: In function `main':
prog.c:(.text+0x51): undefined reference to `pow'
prog.c:(.text+0xdd): undefined reference to `sqrt'
prog.c:(.text+0x13f): undefined reference to `sqrt'
prog.c:(.text+0x213): undefined reference to `sqrt'
prog.c:(.text+0x26a): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include  **      * *  
#include <math.h>
int main()
{
 *  *     **  *** ** **** ***  a,b,c,x,y,d;
*  *** *   **        *   ** **     ***** * %f    ***  * *** **  *  ** *    *  *  *
**     ******* *********  *   *    *    *
** *  ***  * * ***   ** *** ** ***  *  *  *  **
*****   * ** *** * * *  *  **   *      
**  **** **  * **    *** *   (d>0){
*** *  * ** *    ** *    **     *  * *** *  * *** of %.2fx^2 + %.2fx + %.2f = 0 are real and * *  *  *   ***
*** * **    ***   ***   **** * * ****** = %.2f\nx2 = %.2f",x,y);
     ***     **   * * **  **  * 
 ** * **  * ***  ** *  * if (d==0){
    ***   * *** *      *   *** *   *   **  of %.2fx^2 + %.2fx + %.2f = 0 are real and  **** ** *   * *
  ** * * *    * ***  *  ** * *  * ** *  ** * = x2 = %.2f",x);
* *  **   *****  ******  *** 
  *   *** *   * ******  *  
*** **  **       *** *       *   * **
  * * ** *** ***  ******  **   ** *   *** of %.2fx^2 + %.2fx + %.2f = 0 are complex and  * *** *  ** ** *   
  * *  * *  * **  *   *  **  *   ** 
****  *    **  * *** * * **   ** *  **   * = *  *  ***  ***   * **
  ****   *** **     **   ****   ** * *** *  = ** *  ***        
  * *  ***** *******  * *** *

******  *   *  *  *  *  ***    0;
}
answered by (54 points)
1 0
/tmp/ccheVQNV.o: In function `main':
prog.c:(.text+0x87): undefined reference to `sqrt'
prog.c:(.text+0xd5): undefined reference to `sqrt'
prog.c:(.text+0x21f): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
/tmp/ccJPGNPl.o: In function `main':
prog.c:(.text+0x87): undefined reference to `sqrt'
prog.c:(.text+0xd5): undefined reference to `sqrt'
prog.c:(.text+0x21f): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:162.159.115.9
©2016-2026

No related questions found

12,783 questions
183,442 answers
172,219 comments
4,824 users