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:172.69.58.201
©2016-2024

No related questions found

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