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

0 like 1 dislike
13.3k 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 | 13.3k 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:172.70.100.71
©2016-2025

No related questions found

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