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

0 like 1 dislike
8.6k 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 | 8.6k 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:172.69.7.223
©2016-2025

No related questions found

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