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

0 like 1 dislike
11.6k views

Write a program to find roots of a quadratic equation

A quadratic equation is a second order equation having a single variable. Any quadratic equation can be represented as where a, b and c are constants ( a can't be 0) and x is unknown variable. 

寫一個找二次方程的求根程式

For Example

 is a quadratic equation where a, b and c are 2, 5 and 3 respectively.

To calculate the roots of quadratic equation we can use below formula. There are two solutions of a quadratic equation.

使用下列公式:

x = (-b + sqrt(D))/(2*a)
x = (-b - sqrt(D))/(2*a)

where, D = (b*b-4*a*c) is Discriminant (判別式), which differentiate the nature of the roots of quadratic equation.

For the complex result (複數根):

realPart = -b/(2*a);
imaginaryPart =sqrt(-D)/(2*a);

Note: We have used sqrt() function to find square root which is in math.h library.

 

Example input 1:

1 2 1

Example output 1:

Roots of 1.00x^2 + 2.00x + 1.00 = 0 are real and same
x1 = x2 = -1.00

 

Example input 2:

1 -3 2

Example output 2:

Roots of 1.00x^2 + -3.00x + 2.00 = 0 are real and different
x1 = 2.00
x2 = 1.00

 

Example input 3:

1 2 2

Example output 3:

Roots of 1.00x^2 + 2.00x + 2.00 = 0 are complex and different
x1 = -1.00+1.00i
x2 = -1.00-1.00i
[Exercise] Coding (C) - asked in Chapter 5: Selection Statements by (5.2k points)
ID: 28934 - Available when: 2017-10-26 18:00 - Due to: Unlimited
reopened by | 11.6k views
0 0
We will continue this question in few days
commented by (12.1k points)
0 0
Everything is fixed. Enjoy your time with The Judge :)
commented by (12.1k points)
0 0
ANNNNNNNNNNNNNNNNNNNNNNNNNNGRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
commented by (-249 points)
0 0
Your code has newline at the end sometime. You learned this lesson many times!
commented by (12.1k points)
0 0
After i correct the newline in my code,there is still wrong output.However,I had run the program in Codeblocks.The output is still as well as the result. Seeking for help.
commented by (-214 points)
0 0
your output lack of 1 space at line 8 when print out "Roots of ...". Please be careful with all small details when working with online judge
commented by (9.9k points)

56 Answers

0 like 0 dislike 
Hidden content!
**   ** * *    ** **
*  * ****  * * **** 
int main()
{
***** *  ****** ** ** ** **   a,b,c,D = 0,x1 = 0,x2 = 0,Real = 0,imaginary = 0;
**  *** ****** **     ** *** **     ** ** * ** *   * ******* ***    *  

*     *   ***** * *** ** *     of %.2fx^2 + %.2fx +%.2f = 0 are",a,b,c);
* ** *   *   ***  **  ** = (b*b-4*a*c);
 **    **  * ***** ********   ** = (-b + sqrt(D))/(2*a);
 * ******   * *   ****** *   = (-b - sqrt(D))/(2*a);
****** *  *  *   ** **  **  * (D < 0)
 ** * * * *** * * *  * * *
 **   * *    * *   *   *****  *  *    complex and *   *   * *    * **
 ****   **    **   ** * **   **  = * *    * ***** * * * ***   * ****  
 *  *  *  ***  *  ** **  * **   ****   *   =  **   **  *  *  ** **  ** * *   
 ** * **  ****  *  ** ***
** * *  *  ******   * * ***  * (D > 0)
 *  *  *  ****  * *********
  *        **  * ***  ***  **  ** * * real and ****  ***   *  ***
  *  *    ***    * *  *  * ** ****     =  * *** * * ****
****  ***   ** *** ** ******* ***   *  ** ** = %.2f",x2);
*     * ** ** * ***   * ** *  * 
*** ** * *  ** *  **  * **   * (D == 0)
     *      ** **** ***  *  
 *  * ******** *   **  * **   *     real and same\r\n");
   * * *  ***   ** *    ****** *      *   ** = x2 = %.2f",x1);
*   **  *** ****    * *
}
answered by (-214 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
**  * *****   ** * 
int main(void)
{
       ** *   * ** * *  a,b,c,D = 0,x1 = 0,x2 = 0,Real = 0,imaginary = 0;
**  *  ********** *   ***   *        ***  * **   *** **   **   * **** 

  *  **** *    ** ***    **   ****   ***** **  of %.2fx^2 + %.2fx +%.2f = 0   ***** * ****
******** * ****** *     * * * = (b*b-4*a*c);
  *******    ** *  *   *   = (-b + sqrt(D))/(2*a);
* **  *     **   ** * **** * = (-b - sqrt(D))/(2*a);
* ******* *******   **   *  *  = -b/(2*a);
  *   ***   **   * *****        = sqrt(-D)/(2*a);
   **   ** *   **    *     * (D < 0)
 **    *  * *  ****
*    ***   *  **   **   ***  * * *** *    complex and  **  * ** ** *
 **      *** ****** ***   ** *    **  * = *  *   * * * *  * * *  * 
***  *  ** *    * ** * * ** *  **   *  * = * ***** ****     * **  * 
 * **  * * *   * * ** ***  ** 
 * ****   ** ** ** ** * * *  (D > 0)
   ****  **     ** ** * * *  *    
*   *  *** ******** ****** * **   **** **  **** * real and * **  *  * *** *
 *  **  * *   * * **** *   * ***  *   ** = ** * **** ****
  **   **  **  **    * *  *****  **  *  = %.2f",x2);
   * * *  *    *   * ****  **
  ****** *  **  ** * ** * *** * *  (D == 0)
***  *** ******  **** ** *  *  
*** *    **  *   *   * *  *  *  *    real and same\r\n");
     *****  **      *****   *   = x2 = %.2f",x1);
***** **  ** *   * **   **
}
answered by (-214 points)
0 0
prog.c: In function 'main':
prog.c:9:16: warning: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
     x1 = (-b + sqrt(D))/(2*a);
                ^~~~
prog.c:9:16: warning: incompatible implicit declaration of built-in function 'sqrt'
prog.c:9:16: note: include '<math.h>' or provide a declaration of 'sqrt'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
**  *  **       ** * 
# *  **  *  *  * **     
int main()
{

 **** *  * *  ***  * * *  * *  *****  ***  *  * ** * ***
** ** *              *    **   *   * *  ** %f *  *** ****** *  ** *  *** *  *    
   ****  *   * *  *  ** *  *   *  = (b*b-4*a*c);
****  ****** **  *    = (-b + sqrt(D))/(2*a);
 *  **** * ** ** *       * **  = (-b - sqrt(D))/(2*a);
*** **      ****  **  ** ** * **   
 **** * ***    **  **  ** *** ***
*** * ** * * * *  *       *  *   ** * *** *   *        ** *  = -b/(2*a);
**     * **** **   * **** *  **   *  * *     **  * * **   **** ***   * =sqrt(-D)/(2*a);
    **  *   * *   *   * **  *    *   * **    *     **  *  *       *  ** ** of %.2fx^2 + %.2fx + %.2f = 0 are complex and  *   **  *  *** *      
 ** ***  *** * *  *** ****** ***   *  ** ****** **   * * *      = %.2f+%.2fi\n", realPart,imaginaryPart);
 * *   *   *  *** **   **    * * *  *  * *  * *    **  *   *  * *******   = %.2f+%.2fi",    ***  ***** * 
* * ****    * ***  *   *  * **
*  *   * *  *    * ***    *  if(D == 0)
* *****  ** *  *****  **    

   * *  *  **    *  * ***** * ****  *     * **  *** ***  ** *   * of %.2fx^2 + %.2fx + %.2f = 0 are real and   ** * *** *     
* * * *** * * * ***** *  ** ** * ** **      * *  *** *   * * ** * *  *  = x2 = %.2f", x1);
* * **** **** * * *   *
 *   **  **   * **   * *****     
*  * **    **  **  *    *  *
**** *  ****   * *  *  * ***  ***    **   * *  ** **  ***** * ********* of %.2fx^2 + %.2fx + %.2f = 0 are real and  *  * *    * ** **
 * *  *** **  *****              ** ***   * *        *** * ** *** ** ****  = %.2f\n", x1);
  **  ***  * *********** * *  *   *  *  ** * *  *    **  *    = %.2f", x2);
  * * ****** **  *     ** **
 **    *   *  *  ** * *    *  *  0;

}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
*   *   ***** * *  
# ***  * *      *** 
int main()
{

 ***   *** * **** ** *  * **     *** ****   **    ** * 
  * **  *    *  ** *  **    *     **   ** * %f *  **         ***** **     
*  ** *  * ***  *     *  ***** = (b*b-4*a*c);
 ***** *  *** * **  *  ****** = (-b + sqrt(D))/(2*a);
  ***   **     * ** *****  ***  = (-b - sqrt(D))/(2*a);
 *  ****  ******* * *  *     * **  * * *
 **** *   *** *** * ** *  
 **   *  **   **  ***     ** * ***    ** *    * ** *  *  **  = -b/(2*a);
  *  *   * *     * * ***    ****  **** *  *   *** *** *   *  =sqrt(-D)/(2*a);
 *   *  *  *  *      * * * **   ** *** ****  **  * *  *   * * ** * of %.2fx^2 + %.2fx + %.2f = 0 are complex and *  ** **  *   ***  **
** * *   * *    * **      *    ** *    **      ** *   *   ***   ** = -%.2f+%.2fi\n", realPart,imaginaryPart);
  ** * * ****   * ** **     *** ** *** *** ***** **  *******   *** * = -%.2f+%.2fi", *  *   *   ***  
* *******  *  * ***  *  *  *
  *  *   *****     *  ** * *  if(D == 0)
   *    ***   * * *** *****  * 

    *****  *******    *   *  *  ** ** **  * **   ** *    *   ***   *   * * of %.2fx^2 + %.2fx + %.2f = 0 are real and *  * ***   **  *
  ** *****   * * **   ****          *   ***  * ****        *  *****  = x2 = %.2f", x1);
* ******** *    **         *
 ** * ***   *  ** *  * * ***  *
  **  ***  ** ** * **  ***  * 
*  *** *     ** *  **** ****   *  *  * ** ******  *****  * ****  *** ** of %.2fx^2 + %.2fx + %.2f = 0 are real and         ****  ****   
  * *  * ***** ** **** * *    **  * * **  * *  ****       **  * ** = %.2f\n", x1);
* **      ** * * **  * * *       *  *** *  ** * * * ***   * **  ** *   = %.2f", x2);
* * **** **** ****** *   
 ***     **** * ** * * * **  0;

}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main(void)
{
* *** * ** *** ** ** *  *  * a, b, c, D, spD, x1, x2;
    
*****   **** *** *** ** * ** ** *    * *   %lf %lf", &a, &b ,&c)==3)
    {
*** *** *** **  * **  * ** *   * ** * *  ** *** *  *      - (4*a*c);
*   * ********  *** * *  * ** * **   * ** **   * *
 * *  * ** **   **  * *  **  ** * *   **  **  **  *   ***    ** 
  *  ** *** * *   *  **  ** * *** *    * * *
 * ** * ***  * ***  *   ****     * * *  * ** ** **   **  *  ** *  *** *       ** * *****
 *  *  ***** *** * **   **  * **     * * ** **  *** * *  ******    **   * *  **** (-b+spD)/(2*a);
* ***  **  ***  *   *   *  * ******  * *    *    *****  ***  ** *     (-b-spD)/(2*a);
*  ***  ******  * **   **    **     * ***  ***  **** *****  **** * **** * * **    ** (x1==x2){
***         ***     * **  *  * **  ** ******** * * * ***    * **  ** *** *   *   * *   *  *  **** ***  *  ** *   *  ****  **  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
 * ** *** * * ****** *  **   * ** ***    * * **      * *** * **    **   *  ****** * *
* *  ** * ** **   ****  *** * * ** * **     *  ** ** ******  *    *  * * *    ****  ** * * {
*  * * *  ***  *     *** *  *** * ***  **** **   **      * ***  * *** * * *  * ***    *** * * *   **     *   ********       of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
 *   * ******  * ***** ****  * ****  * **  **  *** *  ****  * * ** *  *
* ****  **    * * *   *** * *********  * *    *  ***  
****   **** ****      *  ** *** ****  **** * ** *   ***** if(D==0)
***  ** **  *** **           *** ***   *** * * *
 * *   **  * **  *** *   *     ***    *    *  ** **    * *** * * ** * * **** ** * (-b)/(2*a);
*  * * *  *                * ***  * *  *  *  *****   *   ***     *   * **  *** **  
* * * * * **  *    **  **  *   *    *****   * ***  * * ***   * * *** *****  ** *
* ***  ****** **** * ****   *  **   *      *    * * ***** * **  *  * *** **  *  * ***  *   ******  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
  * *  *   *  *** * **** * ***   *** ****  * *  **** * *    *   *      **  * **  * *
 **  **  ** **  *  *   *  ** * ***  **** * ** *   *   ** ** **  **** *** ** * ** *** 
*  ****    *  * ** *  * * **  *    ***** ** * *    ****   ** **    *  * * * *  *  * 
  *   **** **   **  *    * ***  ***  ***  **** ***   **  *** * *   ***  ** * ** ** 
 * ** * ****    *    ** **     *  **********   ** ** **    **   **  *  *     **     * * **** **   of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
  **  * *  **  **   * ****  ****   *     ** *  * **  ***  ** * ***   *     *  * ***
 * *  * ***   *  * ***** **    ******* * ****
 **** * **  ** *   **     ****   **   **  *** ******  if(D<0)
* *  * ***    *   **  **   *    **    * ** ** * *****       
 ** *   *  *   **** * * *  *   *** * *   **   **       **   ** *****  ** *****  *   *  (-b)/(2*a);
* ***   *   ****   * *  *   * ** *   *   ** * ** *   ******** ** **** * *** *  -x1;
** *** ** * *   **  ***   * *  ****  **  * *  ***** **  ** **    ** * *  ** *** ***** **  * * *  * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
*   * * **  ** *       **  **** ** **   ** * ***  * *  *   
 *  *  *  **  * * *  ** * 
    
**    **   ******     *   ** **** * ***  *  **  *
 *** *       * *  * *   *     0;
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdlib.h>
#include<math.h>

int main(void)
{
 *** *** ** *  *** **     ****** a, b, c, D, spD, x1, x2;
    
*    *** *****  ******** **    ** * *****  ** %lf %lf", &a, &b ,&c)==3)
    {
** ** **   ***  ** *  *** *      *** * * *******  ***  * * - (4*a*c);
  ***   ***  ****  * *  *  ***** *  ****    * ****
*  *   ** ***  ***  ** * * ******  ** * ** * * ** *  * *
 * *  * ***   *** ***** *** *  ******  ** * *  * **** 
    ****     *   ** *      * *      ******* **   *  * **** *   *    *   *   *** *     * ****
****  ** * *     *  ** ****     **   ********     ** *** ***  *   *     *  * **    (-b+spD)/(2*a);
 *   *   * * * ** *        *  * *    **** *  ***   ** *     *    *****    * ** (-b-spD)/(2*a);
****** ** * *  ** ***     *** *** * * * ******* ** *  *   * ***  **** *  *  * *  *  (x1==x2){
**  **     *   **    *   *      ***** ***  **     *    * **** ** ** *** *    * ***** **  * * ** * **  *    *   **** *  **** * * *   of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
 *** * * ** * * **   *   ** ** **     **** ***  * * **   ***** ** ** ** **  * * ** 
   ****  * *     * * ***  *****  ****     * *    *  ** ** *** * *  ******   *  **   *  {
**   ** **  *   *  * *  * **** **   *  *  ***      *  *** ** ***** *  ** * **   *     ** ** *  ** * *    * * * ****  ** *** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
 * * *    *****  ** **  *   *******    * ** * *   *    ***     *   * ** **   *  *
 **    ** ** *    * ** ***      *  *  * * *  *      *  *
*  * ** *  ***  ** **  *    **  ***  * ****  **    *    if(D==0)
  * ** * **  *  * **** ** * * **   ********* ***** *    *  
 *  ****  ** *** **       *     *** ***  *** * *   ***  ** * **  * *   * **    ** (-b)/(2*a);
******  *   *    **  **  **    * ** **   *** **  ***  *  *  *  **  * * *  *     **
* * *     * ***  *  * ********  *****        * ********   ******    *** * *  * ***   
* * * * *** ***   * *    * *   * **  ***  ** ** ** ****  ** * **    **** *    * *    of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
   *  * *    * *     * * *    * **   * * **      ***  ** *  ** ** **  ***    *
* *****   ***  **  * **** *** *  * *   ***  *** ** * ***  ***     *   *    *   **    * *  
  *** ***  *     * * *  *   *  *** *** **  **   **   * *  **** * * *** *  **     
* ** **   ** *   *******  **   **  * *  **  *** *     **   * * *   ** *   *
** **  * ****  ***     * * * *  *   ** *       **  ***** *  * ***    **** ** **  *  *  *** * **** * **  of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
 **  ** *** *    ****     **** *  ***   ***  ***  ** *****      *** **** *     **    * *   
     ****  * ***   *  ** *** * * ****      *   * *    *****
*  ** ** **** *    *  ** **  * *    **  *** *      * **   if(D<0)
* *   * ******* *   *  *** *   * **   *   *   ***   *    
*   * ***    ***  * *** * ****  *  **  *** ***    * * **        *** *** *  * * (-b)/(2*a);
* ** *    ****   *  * ** *** ** ** *** *  *    **   * ** **  *** *   * *** ***   ***** -x1;
  * *   **  * **      *** * **** **   * *  * * *   **  *  ***   ** **      * **      ** * ******  of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
****   *     ***** * * *  * ** **    * ****  *  *  **
* * ***    ** ** *** *** **  
    
 *** ****  * ** * *** ****   * * ** *****
***  **     * * **     *  ***   * 0;
}
answered by (-249 points)
0 0
prog.c: In function 'main':
prog.c:8:11: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
     while(scanf("%lf %lf %lf", &a, &b ,&c)==3)
           ^~~~~
prog.c:8:11: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:8:11: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:18:17: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
                 printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
                 ^~~~~~
prog.c:18:17: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:18:17: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:21:17: warning: incompatible implicit declaration of built-in function 'printf'
                 printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf",a,b,c,x1,x2);
                 ^~~~~~
prog.c:21:17: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:29:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
             ^~~~~~
prog.c:29:13: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:34:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf",a,b,c,x1);
             ^~~~~~
prog.c:34:13: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:41:13: warning: incompatible implicit declaration of built-in function 'printf'
             printf("Roots of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
             ^~~~~~
prog.c:41:13: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int main(void)
{
**  **** ** *  *   * **   a, b, c, D, spD, x1, x2;
    
* * ** **  *** *****  * **  **  **      **   * * %lf %lf", &a, &b ,&c)==3)
    {
 * **   *   * * * ***  * **      * *  ***  * ** *  ***    - (4*a*c);
 ** * *   * ***   * ***  * * **   ** * *    *   * 
 * **  **** ** ***  ***    **  * *  * ** *       * * *****  
**** * ** ** *   **    **  * ****  * * * ** *    *  *  **  
**       * * * ***  *** ** *  **  *  *   **** * **** * *** *   * *    * * **    *** ***** * * *  *  
 ***   * * * *****  *** *   * **   * * * * ****   ***** *  * **  **  **  ** ** ** (-b+spD)/(2*a);
*   *** ** *   * *    ** *   ****  * *   *** *  **   * *  *** **  **    ** ***  (-b-spD)/(2*a);
  **** **** *  ** ***  ***  ***  **** ***     **  *  *****  *  **** **** *  **  *  **  **  *  (x1==x2){
***  * **  * ***  **    **  *** * ******      * ** *** ** ***  **  ** ***** *   **    *  **  ** * *    ****** *    **   *    * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
 ** *      *  **    * * *** *  *   *** *   * * *  *    *  ** * * *  *   ** *  *  *
* *  * * **    *  * *  *    * * *   * ** ***      *** **      *   ***** *  *   * * ** {
** * *   ** *** ** ***** * **  ***   **   ** **  * * **    **    * * ***  * **  *   *****  ** ** *  *   * * ****  ****** *** ** ** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and different\nx1 = %.2lf\nx2 = %.2lf\n",a,b,c,x1,x2);
***   **** ****** *  **  ** ***   *  ****   *  **** *  ***   *   *****    
  *  * * * **       * *    * ***** *** ***   **  * 
** *****     **   *** *  **  * **  * * ** ***  *  * *   if(D==0)
 * ** * * ** * **** ** ** **  ***  ** * * ** 
  *     *   **      ** * ***     ****** * **  * ******     **   ** *  * ***  * (-b)/(2*a);
 ** **  *******   * *   *   ** * ** ** **        ** * ***      *  ***  *  *  *  *****   * 
** * ***  ******* ** ** ****** ****** *******   *      ** ** *  **   *   **   ** *
* *  * *****  **    ***  * * *  ** *  ***  * *   * ** * ***   ***   ** * * *  ** *****  *** ** *** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
  **    ***   * * ** ** *   * *  ******  ** ** *  * ****  * *      ***    *
 ** *  **   * *  * ** *    ****   *    ** * *     *  *    * **   *** * *  * ***
*****   *  *  **   *  ** ** *  **   **     * ** * **    ***  ** ******    *
 *     **** ***** *  ****    ********* * *   * *** * * * ***** ** * ***   *  *  **
*****   *  ****   *     *****         * * ***     ** *  ** * **    ***  *  ****  **   *  * *   of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = %.2lf\n",a,b,c,x1);
   ** *     *  *    *  **    * * * * **     ******  ** * * * *****  *  *   
* *    * *        **  ** * * *   ***   *  **  **  *** 
 ***  *** *  **  **   ** **  *   ** ** **  ***  **    * * * * *** if(D<0)
**      * *   * *  ****    **** **  **  ***  * * ** * *    
 *   *** * **** * *   * ** *** * *   * **** *  **     * *  ****  ***** *  * * * ****  *** (-b)/(2*a);
      *   ** ** *  * *      *   *  *    *  ************  *    *** ** ********  ***    *   *    -x1;
**  *   ***       *   *    * * *  *    ** ****  **** *****   *  ** *  *** *** * **  of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and different\nx1 = %.2lf+%.2lfi\nx2 = %.2lf%.2lfi",a,b,c,x1,x2,x1,x1);
 *     ** * ** *** *** ****    *  ******  * * *   * *  *  * 
*   * **       ** **   ** *
    
 *** * ** *  ***     ** ****  *  **  * **  * *  *  * ** 
*   * *  *      * *     ** 0;
}
answered by (-249 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
  * ** *  ** *    
*    **** **  * ****  
  *   * ****  ** ***
int *   *  *
* ** **      ** * *****  *  ** **** a, b, c, D, spD, x1, x2;
 * ***   * ***     ****** *
  * *  ***      *** *** *  ** *   *    *** *    * %lf  * *** * * *  * &b   *** **** 
*   **    {
*** * *** ** ****  *** *   *  *   * * *  *  *** **  * * *   - (4*a*c);
* **** * * *      ***** **  **** **  ****   *  *  **
 *** * *       * *  * **
*** * ***       {
 **  * * ********      ***  ** * *  ****   **      * *****
 * ****  *  **** *  **  *****  *       * * * **    *   *** *   * **   x1=  * *** ** *
 * *  ** **  * * ** *     ***  *  *  *  *   ** * *  ***   * ***   x2= *   * * **  
********** *    ** *  **   **  ***  * * **   ***  *   ** *   if (x1==x2){
*  **     ***  *** ***  ** ***  * * * *** * *     **  *   * ** *           *  *  *    * * of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 =  **  ***  ** **  *** 
* *  ****** **   ***  ***  ** *       ** * ** *     **  * ****** *  ***  * * * ****  **  *  
 **    **    *** *    * ***   *    * ***** *  **  ****  *   else {
**  *    * * *** *   ** *** ** *   * ** ***  *   * **      *   * *  **** **** *   *        * ******** *  *** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and *  *   *   = %.2lf\nx2 =        *  ***   ****  *
  * **** *  ***      * *        * **    **    *   *** **  *   * ** }
* ***   ** **   **     *** ** ****  *** **  *    *  **
***** *     *  ***  ** *** * * * ** * **** *  *   ** if(D==0)
** * * * * ***  **      *     {
 ** *     *  *****    **    **  ** * ** **** **  * *  * ** *****  * ****  * ***    *    * *
 *  ** **   **   *** * ** *  * ****  **** *    ** * **  *****   * * *  *  *   *  
 * *        *       {
** *  ***    *  ***  * ** **      * ***      * * ***   * * * **** ****  * * *** ** *****  *    of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 = ***  *** ***   * *
  *    * * ***   ****  *  *  ** * * ***   *   **  ***  *   ***** **  * ** *** ****
** **  *  * *** *** **   *   * ** * *      **   ***   ***   * ** * *  *  *
*  *    *****  * * ****  ***     *          *** *  * ****   **** **  * *   * ** ** ***
*   * *            {
**  *  * **   *   **   * ***      *  * * * *  *   * * *** **   * *** *  **  *** *  * *   ** of %.2lfx^2 + %.2lfx + %.2lf = 0 are real and same\nx1 = x2 =  *  *  ***    * * **
** ** * **   ** *       *   * **  ***** *  **     ***** **  *  **  *   *  * **     
****** **  ***     **  ** * **** *  *  ***    ** *    
 ** ***  **    * * **  *      **** **** ** **   *  *   * ** * * ** *   * * 
 *   *         ** **   
            x1= **  * * 
 ***          ****   ****   **** x2= -x1;
***   **   * *** **  *** **  **   **** **    *  *  * *  ****      *      * *   ***** * **  * of %.2lfx^2 + %.2lfx + %.2lf = 0 are complex and   * ****   = ** * ******  =  **     *** ** **  ** * *** 
****** *** *  **  *** **   *** *  * **  ***     * ** * **
   *  ** *  *      ****    
     *  *** *** ******  *  **
  *   **          * *  ****  *  **     *** ** *  
 ** ***        *    *   * * * ***  *** 0;
}
answered by (-249 points)
0 0
/tmp/ccvUqbC2.o: In function `main':
prog.c:(.text+0x6e): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
* ****** *    * 
    *          **** ***
int main(){
*    *       *   *** ** * **   *** * a,b,c;
*  *  *** *  ** * **  *  ***     ***  D;
  ** ******** *          *****    **  ** %lf  *  **** ** *    ****** * **
  ** * *  ***** **** *  ***** ** - 4*a*c ;

  *    * *  *  *  * *    ****** **  *     * of %.2fx^2 + %.2fx + %.2f = 0  *  *  **  

 *   ***      ** * ** *  ** *** **
  **    *   * * *   * * ******  *** * *       ***** *** **** **    * *** * **  complex and ****  *** **   
****  * ** * *  **   **        ** ** ***  * ** **    * **** * ** * ** =     ** * *** (-b) / (2*a) ), sqrt(-D) / (2*a) );
* ** ***   *   *** **** * ** *  * *   *  ***  *  ** * ****     ***  *  = *** *  ****** **   (-b) / (2*a) ), sqrt(-D) / (2*a) );
** ***** * * ***  *  *   * 
 **** * **  ** * ** *   ** * *  if(D==0){
*  * ** *  ** ** *  **  * * * ** ** *  ** ***  * ** **   *  ** *  *  real and same\n");
   *** * **** *  ** **  *  **   **  * ** *  **** *  * ***  **** * = x2 = %.2f",( (-b) / (2*a) ) );
****    **  * **** **** ****
**  * *   * ** ** * **   **  ***
 * **       *** *  * * **       *** **  *** ****** *  ****  ** * real and   * * * **  *
 ****  **  ** **    *   * **  ****  *** *****  *    **** *     **    * = %.2f\n",( ((-b) + sqrt(D)) / (2*a) ) );
  *** *   *   * *      ** * *  ** * *     **  ***  *   *  * *  = %.2f", ( ((-b) - sqrt(D)) / (2*a) ) );
 * ***    **  **** *   *

   ** *  *     **   ** *    *    0;
}
answered by (-116 points)
0 0
/tmp/cc8OPUJA.o: In function `main':
prog.c:(.text+0x51): undefined reference to `pow'
prog.c:(.text+0xdd): undefined reference to `sqrt'
prog.c:(.text+0x13f): undefined reference to `sqrt'
prog.c:(.text+0x213): undefined reference to `sqrt'
prog.c:(.text+0x26a): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
/tmp/ccLeUfQ5.o: In function `main':
prog.c:(.text+0x51): undefined reference to `pow'
prog.c:(.text+0xdd): undefined reference to `sqrt'
prog.c:(.text+0x13f): undefined reference to `sqrt'
prog.c:(.text+0x213): undefined reference to `sqrt'
prog.c:(.text+0x26a): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include     * ****      
#include <math.h>
int main()
{
 *       *  * ** *     ******* ** a,b,c,x,y,d;
**** * ** *  * *  * *    ***  * ** *  * * *** %f * *** * *   ******   ***    ** ***
   ** ** *  ** ** * *    **  * ** * 
****   * ** *  *      * *  **  * *** ** ***
** *     * * * *  * ** **   *     * * 
* *  **    * **  *  **  *** * * (d>0){
   **  *   ***    **  **** *  **  ***  **    of %.2fx^2 + %.2fx + %.2f = 0 are real and * ** ** ** *  ***** *
*****   *****     ** *  * *  * * *   ** * = %.2f\nx2 = %.2f",x,y);
 * *      **    **   ****  *   
***     * ***  ****    if (d==0){
*** **  *   * ** *  ***  **        *  *  ** of %.2fx^2 + %.2fx + %.2f = 0 are real and *       *   ****   
**  ****  * *  ****  **    **     *  ** = x2 = %.2f",x);
*  *  ** *  ***** *****     ** *
 *  *  ***    * * *** **    ****
* **** *  *** *** *       **  * * **
***  *  * *    *  * * * *  * * *** * of %.2fx^2 + %.2fx + %.2f = 0 are complex and ***    *** ** * **
* *  * * **    ** *****   *  * *   *   ***  *
** ***   *   * * * **** *    ** * * ** ** *** =     * * ****   * 
 **** * *     *   *****      ***** *   =      * *  *** * 
  *****   ******  *    ** *** ** 

** **    *  * ** * **  * *** 0;
}
answered by (54 points)
1 0
/tmp/ccheVQNV.o: In function `main':
prog.c:(.text+0x87): undefined reference to `sqrt'
prog.c:(.text+0xd5): undefined reference to `sqrt'
prog.c:(.text+0x21f): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
/tmp/ccJPGNPl.o: In function `main':
prog.c:(.text+0x87): undefined reference to `sqrt'
prog.c:(.text+0xd5): undefined reference to `sqrt'
prog.c:(.text+0x21f): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.71.203.112
©2016-2025

No related questions found

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