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:172.70.127.10
©2016-2024

No related questions found

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