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

0 like 1 dislike
5.3k 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 | 5.3k 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!
#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:172.70.100.223
©2016-2024

No related questions found

12,783 questions
183,443 answers
172,219 comments
4,824 users