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

0 like 1 dislike
8.9k 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 | 8.9k 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:172.69.58.139
©2016-2025

No related questions found

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