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

0 like 1 dislike
9.5k 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 | 9.5k 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:172.69.6.151
©2016-2025

No related questions found

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