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

0 like 1 dislike
19k 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 | 19k 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:162.159.115.10
©2016-2026

No related questions found

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