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

0 like 1 dislike
9.5k 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 | 9.5k 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:172.69.7.211
©2016-2025

No related questions found

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