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

0 like 1 dislike
9.7k 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 | 9.7k 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:172.71.255.90
©2016-2025

No related questions found

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