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

0 like 1 dislike
9.1k 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 | 9.1k 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:172.69.6.59
©2016-2025

No related questions found

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