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

0 like 1 dislike
18.1k 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 | 18.1k 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:104.23.243.109
©2016-2026

No related questions found

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