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

0 like 1 dislike
14.7k 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 | 14.7k 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:172.70.80.196
©2016-2025

No related questions found

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