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

0 like 1 dislike
12.1k 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 | 12.1k 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:104.23.197.9
©2016-2025

No related questions found

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