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

0 like 1 dislike
7.6k 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 | 7.6k 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:172.70.100.76
©2016-2025

No related questions found

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