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

0 like 1 dislike
10.9k 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 | 10.9k 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:172.69.17.177
©2016-2025

No related questions found

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