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

0 like 1 dislike
2.5k 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 | 2.5k 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:172.69.7.22
©2016-2024

No related questions found

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