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!
#include <stdio.h>
 ***  **  **********  ****
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 real and   * * *** * **  **
          *  **** ***  ** ******* *   *  * **   *   *  * **   ****  = %.2f\nx2 = %.2f",x1,x2);
     ***** *    *  ** 

 *  * * *** * ** ***** *   ** ** if(D==0)
 *   * * *      * * ** * * * 
 ** ** *****  * * * * ****  **** ****    **  ** * * * *  *  * * ** * of %.2fx^2 + %.2fx + %.2f = 0 are real and same\n",a,b,c);
 * **** ***     *   * **  **   **  * * *   * ***    ***    * ***** ** = x2 = %.2f",x1);
 ** * *  ******     * * *   
 **** * *   ** **    ** **   *  
***** ***  * * **** **  *   
     **  *   *    ****   *****     **  *** * *    * *   *** * *  of %.2fx^2 + %.2fx + %.2f = 0 are complex and *  ** **   **** 
  * ** * * * *  **** ** **** *** **  * * ** * ***** * **  * *****   * = * ** * **   *** ** * *    *** * 
 ***** **   * ** ***** **     **** * * * *  *** * **  ***  * **  * = **  * *   * *    * **   ***** 
 ** ******* ** * *******   **
* ** ***  *    *   * **   * **   0;
}
answered by (-281 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 <stdio.h>
  ** *** *** *  * **
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 %.2f x^2 + %.2f x + %.2f = 0 are real and ** ** ** *  * ** * 
* * * ****   **** ** *** *  * * *****     *** ****  *   *  = %.2f\nx2 = %.2f",x1,x2);
********  **  *  *

* *    *  **   *** if(D==0)
**         *    ***   * **  *
 * *  *   *     *   ***** * *   * **   ****** ** ** * ***  **    *  of %.2fx^2 + %.2fx + %.2f = 0 are real and same\n",a,b,c);
* * ** *  *  *  *   *   **  **        *** **  *  *  *    *  ******    * = x2 = %.2f",x1);
*  ****  ** * * * * **
** **  *   ** *  **  * * *** * 
     ***      *  *   * *
*** ***   * **   ** **     * **** ** **  ***  **** **  * *** ****  of %.2fx^2 + %.2fx + %.2f = 0 are complex and     * * * * ** ***
 ******** * **********   ****  *  *    **  **   *    **   * ******   = ** * * * * * *** * * ** **  
    **   *    * * * ****  ** *   ****  ******   *   * ** **     ***    * =   *  *** *** ****  *   *   *  *       *
*     *** *** ** ***  * *  * 
   * ****  **   * * ***** *   ** * 0;
}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Correct output
Case 3: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()

{
   **  **      * **     * a,b,c,x1,x2,D=0;
  * *** *****   * * **
    ****  *** *   *      *  *******    * %f   * * **  * * ** * * *  *  * 
* ** * *** ***  *  * *     *
 ****   * * *  * * * * *  *
**    * * * * ********** ***   + sqrt(D))/(2*a);
***  * ****  ***** ***     **  * - sqrt(D))/(2*a);
  * ***   ****  ** *  ** *   
     ***   *** ** *****  **  * **
 **  *  ***    ***** * *  **
  *  ** *** *  *  ** *** * **    *   *    ***** ****    **  * ** *  of %.2fx^2+%.2fx+%.2f=0 are complex and *   ** ****   * ** **  *  *  **** ***  
 **   * **      **** *   ** **
*    *     **  * ** *  * 
*  *   *     *  * * ***** if(D==0)
 **  *****  ****  *** ** 
    **** * *  ***    **  * *  *     *  *  ***  **   * * * *   of %.2fx^2+%.2fx+%.2f=0 are real and same\nx1=x2=%.2f",a,b,c,x1);
  ** * * * ** **   * *   ** **  * 
***  **   *     * **** *
 *  ** *   ****   ***** ** * **
 * ****      **    *** **   
  ***   **** ***  **** * * ***    * *** *** *  * **  **   ****   * ***   of %.2fx^2+%.2fx+%.2f=0 are real and ** ***  * *   *** * *  ** ** ** * 
 ***  *** * **   ********* ** 
* *   *     *         ** * *
    ** ****  *****   **
* * **** ***    *    *** **   0;
}
answered by (-127 points)
0 0
prog.c: In function 'main':
prog.c:12:14: warning: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
     x1=(-b + sqrt(D))/(2*a);
              ^~~~
prog.c:12:14: warning: incompatible implicit declaration of built-in function 'sqrt'
prog.c:12:14: note: include '<math.h>' or provide a declaration of 'sqrt'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
**   * **  * ** *
int main()
{
***  * ***  ***** *  * * a,b,c,D;
  *** *  * *   *  * *   **  *   **  x1,x2,r,i;
* *** * **  * * * ** * *     * **** *           * **     ***** *   * * ***  
* ******* *** *   ** * * *  ***  *  *** *   **
    *  *  *   * *  *   * * *   *  * *
    *   **   * * **    *** ****     *  *   **
   ***  *  * ** ** ** ** ** ***
  *  **       *      *  * *   
 *** *  * **  ** *  **   **    * *  * *   **** **   *** * **      ** * of %.2fx^2 + %.2fx + %.2f = 0 are real and same\n",a,b,c);
  * ** *      *       ****     * * *   * ****   ** * ** * **  * * **  = x2 = %.2f",x1);
** *********  *  *    **    **
*  *  **** * *** * **  **** **  if(D>0)
*** *** * **   * ** *****  
* *  ** **** ********   ***  * ** *  *  * * ** ** *  * **  **  **** of %.2fx^2 + %.2fx + %.2f = 0 are complex and         **  * * *
  ***  ** ***  *  * **   *   **    *  *      *  **   **  *** *  *   = %.2f\n",x1);
  **  * ** **  *  ** *** ** **   ****  ****   *   ***  *  ***  * *    ** *  = %.2f",x2);
 **   *      ****** **** *
  ** *  **** * ********   * ** if(D<0)
* ** * *    * ** * *  * 
**   *  * *** **      *  * **     **   *   *** *   * *** ***** * ***  *** ****   of %.2fx^2 + %.2fx + %.2f = 0 are complex and different\n",a,b,c);
***  *   *  *       *   *    ** * ****    *  * **  * -b/(2*a);
  *****       *  * **   ***** *  *    *** ****  ******  *** *     * 
* ***  *  * *   *   ****  *  ** ****   *  * *   *     ***  **  ***  * *  *  = %.2f+%.2fi\n",r,i);
 * * ***** ** ****  **** * *** ** *** ** ***  ** ******** * **** * *    = %.2f-%.2fi",r,i);
     *****  **  **  ** *  *  *
}
answered by (-329 points)
0 0
prog.c: In function 'main':
prog.c:6:5: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
     scanf("%f%f%f",&a,&b,&c);
     ^~~~~
prog.c:6:5: warning: incompatible implicit declaration of built-in function 'scanf'
prog.c:6:5: note: include '<stdio.h>' or provide a declaration of 'scanf'
prog.c:12:9: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
         printf("Roots of %.2fx^2 + %.2fx + %.2f = 0 are real and same\n",a,b,c);
         ^~~~~~
prog.c:12:9: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:12:9: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:17:9: warning: incompatible implicit declaration of built-in function 'printf'
         printf("Roots of %.2fx^2 + %.2fx + %.2f = 0 are complex and different\n",a,b,c);
         ^~~~~~
prog.c:17:9: note: include '<stdio.h>' or provide a declaration of 'printf'
prog.c:23:9: warning: incompatible implicit declaration of built-in function 'printf'
         printf("Roots of %.2fx^2 + %.2fx + %.2f = 0 are complex and different\n",a,b,c);
         ^~~~~~
prog.c:23:9: note: include '<stdio.h>' or provide a declaration of 'printf'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
*** * **     **   * *
int main()
{
  ** * **** ***     a,b,c,D;
  ****  ** **  **  * **** * *  x1,x2,r,i;
*****     * ***** ****     ** ****  * *** **  *** **  **  *  *   *  ** ***** * **
*   *  * * **     *** **    *  ** ** *
 *     * **  **** ** *****  ***  ***** ****
***  **      * **** ** * * ****   * *** ***  ***
  **  ** **    * * *** *     
 ** ***   *  ** ** * *  **
  * *** *  ** **   *       *    **** ** **** *  * *     **  ** * ** *  * of %.2fx^2 + %.2fx + %.2f = 0 are real and same\n",a,b,c);
 **  * *    **  **  * *  *   *   *  ***    *** ** * *   *** *** = x2 = %.2f",x1);
** * ***  ** * *  **   ** 
******    *** **** *    *  ***    if(D>0)
   * ***** *  **  *   
 * *** ** *  **        **** **  ****    *  ** ** * *** ***  ** *  of %.2fx^2 + %.2fx + %.2f = 0 are complex and   *   ******  ** 
  *** **  ***   **** **  ** * ** ***  *** ** * **     * * * * * = %.2f\n",x1);
 ****  **** **   * **** *** *  ***** *  ***   *   ***   = %.2f",x2);
  **            **** *   ***** **
*  ** *  **** *** ***** * * *  if(D<0)
 ** ***  ** *** ***** ****  
*** * ** *   ****  * ******** * **    ***  *** * *   **** *     ** of %.2fx^2 + %.2fx + %.2f = 0 are complex and different\n",a,b,c);
  *  *   * * * *   *    * * *    ************** ** ** *  -b/(2*a);
  **  * ****  **  *     *** * *  *** * ** ***  *  **    *  
* **   **** ** * **    ******  *  *  *    * *    **  * *     *   = %.2f+%.2fi\n",r,i);
*   ** *  * ****     *  ** *** * ******* * ****  * ********  * *  = %.2f-%.2fi",r,i);
***  * ** *     ** *  * ** *
}
answered by (-329 points)
0 0
prog.c: In function 'main':
prog.c:8:12: warning: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
     x1=(-b+sqrt(D))/(2*a);
            ^~~~
prog.c:8:12: warning: incompatible implicit declaration of built-in function 'sqrt'
prog.c:8:12: note: include '<math.h>' or provide a declaration of 'sqrt'
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main()
{
*    *   **  *       * **    *    a,b,c,d,x1,x2;
*  *  *  * ***   *      * * * *  ****** *** **  ** ** **  ***  * * ***
  ** *  * *  ***   * ******* ** 
    *** ***   * ******      **        
 *  *  ** ***** *   *   **   *  *         **
*  **      *  *** * ***  *            * 
** ** *  *   **       *  ***
   * *    *  *** **** ** * ** *      ***  *   * ** * **   *   * *  *** of %.2fx^2 + %.2fx + %.2f = 0 are real and     *** ********  
*   ** *  * ** ***** *  * **  * *   *    ** ** ** * **  *  *  *  *  = %.2f\n",x1);
** * * **  ****  ***  * **** ***  * **  *  *  **  *  ** **    *  *** * = %.2f",x2);
  **  ***  ***   * **  *
 * ** * **     * ****  *  * *   if(d==0)
  ***** *** * *  ***  * *
**   * * ** * * ********* ***  ****** ***   * **** * * ** ******    **** of %.2fx^2 + %.2fx + %.2f = 0 are real and same\n",a,b,c);
***    ***  ******  * *****  **** *  *   *    * *    * ** ** *  * **   = x2 = %.2f",x1);
 ****    *** * *   * * 
*   **  ****  *    *** *   ** 
* ** *    *   * **   *     
  *  ****    *   **   ** *  ** **   ***   **     ** **  * * **  *    * *  of %.2fx^2 + %.2fx + %.2f = 0 are complex and * *   * ***** *** 
     * ** * **** ** *****  *  ** * *  * ** * ** * * *  *** **   = *   * **** *  *  *   **   *
** ***  ***   *   **  ***  ** *  ** *****   ** *** *  *    *** =    * * ** *   * * *** ** *  * *
 *  *   **      ** *  *** 
  ** *    * ***  *  * **  *   ** 0;
}
answered by (-498 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 <stdio.h>
#include <stdlib.h>
#include <math.h>

int main()
{
 ***   ***      *** * ** *****  a,b,c,d,x1,x2;
 ** *  *** *****  *   * *  * * *** * *     ** *   *   ***  ***** **** * ****  
  *   *  *** *** **** ***   *  ***
**    **  * ** ****** *** * * = (-b + sqrt(d))/(2*a);
** ***** * *  *  *  *    * **** = (-b - sqrt(d))/(2*a);
* ** * ***    **  *  *    ***     **
    ** **   * ***  * **  ***  **  ** * ** ******* *** **    * * *****  *   of %.2fx^2 + %.2fx + %.2f = 0 are real and different\n",a,b,c);
*  * * **  *   *   *** * ***  ****  * *    * * * ***    * * ** **** **  *    **    * * *   ** *** **   * **** **** *** ** *   ** *** **** ****   *    **** ***  *****  * *   *    **       ***  *  *    *     *  * ***** ****    = %.2f\n",x1);
*  *  *****  *** *****    **  ** **     **    *******  *   *   *  * ***  **** ******  ** *  *  * *  * *** ** *  * ** *** *    ***  **  ** *****     ****  **** *  ***   *  ****** ** ****   * * * * *** ** ****   * *  ****  ***** = %.2f",x2);}
  * * **** ** **  * * *** * *  if(d==0)
 *        **     *** ** * ****  ** ** ** ***  
    * ** ** * *** *   *  *  ***    *      **  ** ** **  ********  * ** *  *   **** of %.2fx^2 + %.2fx + %.2f = 0 are real and same\n",a,b,c);
  *** * * * * *  * *      ** *****    * * *  * * * **    ** * * * **** **** *** **   * *    * *   * **  * *  * * *  **   * ** ***  = x2 = %.2f",x1);}
 * ***** **  ****   *  * *  **** *  *
* * ** ****  * ******* ** * **  **** *********  *   * *  *     **  *   ** *  **   of %.2fx^2 + %.2fx + %.2f = 0 are complex and different\n",a,b,c);
 **  **    ******  ** ****      * * **** **  *   *  * *   ****  ***    *  = * **** *    * **** *    **  ****
** ******* **  *** ***   * *  ** **  * *    *  ** ** ** **   ****  = *   ********   ***  * * ** * 
 * *  *  *** *     *  **  * 0;
}
answered by (-108 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    *     *  * 
#include  * * *** ** **

int main()

{
 *      **** *   **  **** **** * * * * ** ** ****  *
 *  **  *  ** *     **** * ******     %f ***** * * *  **  *   ** **  **** 

*   *  *  **   * ** *  * ** * ** 
**  * ***  **    **  **** **    + sqrt(D))/(2*a);
**  *     * * ***** *******  - *  *****  ** 
  *   *** *  * ****** **** * * * ** 
 * *  **  * **    ***** * * ***   **

* *    * ** * ***       *  (D==0)
   *   ***  *  * **** * *
   *   ***        ******* *   * ** *       *   ** **       * * * * of %.2fx^2 + %.2fx + %.2f = 0 are real and same\nx1 = x2 = * *  **  ***** *
* ******* **   *** **  ** 
  **  *  *   ** **  * * **  if (D>0)
* *****  * **   **   *  ***    
** ** **  * *   ** **  ***   *   ** ***  *  ***** *  *     **** of %.2fx^2 + %.2fx + %.2f = 0 are real and different\nx1 = %.2f\nx2 = *******  **   * *
  *  ** *** ** **** *    ** 
  *****  ***  ** * **   ****
**  ****** ***        **  * * 
**   ****     **** *** ****  *       **** ***  **    *****   *   * * *   of %.2fx^2 + %.2fx + %.2f = 0 are complex and different\nx1 = %.2f+%.2fi\nx2 = * *** ****** *  * * *   **  ***  
 * * * *  * *  * *  *  * **  

* ** * *   * ** ** * *  ** ** 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 **   ** ** * **   
#include    ** ** *** *
int main(void)
{
float a,b,c, D, x1, x2,i;
***  ** *       **    ****   **   * %f ****      &a, &b, &c);
  *  ****  ** *  * ********   **  *
* *        ** * * * **   ***  (D>0)
  * ** ** *** * ** *  **   *
 ****  **    **** **  * *      ****        **  * * *  *** *****  *  *
*   ****  ***** ** * ** *****   ***   * ** ****  ** ** ***   ******  **   

 **** * ** ** * * **   * ******** ** *     *****  * **  *  *   ** ** ****  **   ***  of %.2fx^2 + %.2fx + %.2f = 0 are real and *   *  = %.2f\nx2 =  ** **    ** *    **
       * ***       * * ***  *
*** ****  *  *  ****  *****    if (D==0)
  * ** **  *  *  *      * *      
 *   *    **   * *  **** ***  ** **  ****      *   *    * * * ***  *    
****   ** ***  ****  *    ** ***  ****  *  *  *** **** *  ** *** of %.2fx^2 + %.2fx + %.2f = 0 are real and same\nx1 = x2 = * ****  *** *** *    
**  *    * **** ** ** *** * 
    * ** ****  ***** * **   
** *****  *   *  *    **  **   
****  *****   **  ** **** *  * *   x1=x2 = -b/(2*a);
*** ***    *  * ****   ****  ** *   * ********* * ****  *  ***  * *  
 ****  *** **  * * *  * ***  *  *    * *****  *** **  ** *** * ******  of %.2fx^2 + %.2fx + %.2f = 0 are complex and   **       =  **   * *** = *  * ******     **  * x2,i);
** *  *   ** * *   * ** *   



  *   ****    **  *******  0;
}
answered by (-304 points)
edited by
0 0
prog.c: In function 'main':
prog.c:10:16: warning: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
         x1=(-b+sqrt(D))/(2*a);
                ^~~~
prog.c:10:16: warning: incompatible implicit declaration of built-in function 'sqrt'
prog.c:10:16: note: include '<math.h>' or provide a declaration of 'sqrt'
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
commented by (4.3k 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 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:21:5: error: expected ';' before '{' token
     {
     ^
commented by (4.3k 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 0
Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Correct output
commented by (4.3k 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      ***** **
#include  *  ***  *****

int main()
{
*****   **** ** *  *  *   ***** *  a, b, c,   *  * * x1,x2, realPart,  *  *  *


*  * *  *  **  *  *   ** *  *  ***   *  ** %lf    **** ** *  * &b, &c);


**   *  * ***  **   ***     ***  = b*b-4*a*c;

 ** *     * * * *   * *  * *  **  condition for real and different roots


** *****   * ***   * ***  *** ****   for real and equal roots
* *** *  * * *** ** * ** ******  *  (determinant == 0)
**** ** ****** *  *  *** **  *
** **  *  * *  *  ** **    *** * * **  **   **   *             * = x2 = -b/(2*a);
******** *   **  *****  *** *  *  *   * ** *   * **** * ***   * ***  of %.2fx^2 + %.2fx + %.2f = 0 are real and * ********* a,b,c);
****     *    *     **    ** *** *  ****  *  * *   *****   * *   * = x2 =   *  **    x1);
  * *  ***  * *****     *** ** 

 **   *  * * *   *   * *  *** ****   * if (determinant > 0)
* *** ** **   **   *  * *  **
   *   ****    * * ***  **  sqrt() function returns square root
* ** * ** * ******   ** * *    ***  *** **   *   *** *****    * = * ****   ****** * 
  ***  *  *****   ********  *    **    *   *  ***** *   = *    *****  ** * ****  **

* **   * *   ****   ***  *** **    * * **  * ***  * *  *  *** * * * of %.2fx^2 + %.2fx + %.2f = 0 are real and  * **  * *    *   
     **** **     *   * * ***  ** *    ***** ****** *  * ****  ********* = *** ****      x1);
* **   *  **  * * ** * ****   *** *** *    * *  * *  * ** *** *  ** * = ****** *** x2);
  *   ** * **       ***** *  if roots are not real
 ****       *** **  **        
*** *     ** **** *  * * **
*   **  *   *   **  *   ** ***  **  **  *    *  *  * * * = -b/(2*a);
  ** ***     * *  **   **    * *  **** ** *  *   * * * *   * * =  **    **   * * 
***  **   *    * ***   *    ** * **  * * *  ****   *****     ** of %.2fx^2 + %.2fx + %.2f = 0 are complex and * *  *****   *  a,b,c);
*    * ** **** * *  **  *  **** **** * *** *     * ** * **  *  **** ****** = *    ** * ** realPart, *** * *** *** 
* ******* ******  * *  **    * **  ** *** **  *    ****  *  ****   = *  *  ****  *  realPart,  **  ***
* * *  * **   **     * * **

 *****   **  * **     ** **    0;
}
answered by (-167 points)
0 0
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:172.70.115.87
©2016-2025

No related questions found

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