10-26 Exercise 1: Calculates and displays the GCD of 2 integers

Question

Write a program that asks the user to enter two integers, then calculates and displays their greatest common divisor (GCD).

寫一個輸入兩個整數 輸出它們的最大公因數程式

Hint: Use Euclidean Algorithm

使用歐幾里得演算法

Example input: 

12 28

Example output:

4

 

Answer 1

Hidden content!
#include<stdio.h>

int main(){

 ***   *  * * * ********    *   a,b,i,max;

* *  *      * * *   *  *  *** ** **  ***** * * *  *  ***   *  **

*** **** * **   ***     * * *** *   *  * **    ***  **** * * *******
*   * *    * ******* * ** *
   *  *  ** * **  ****** ** *  *   ***** *  ** *  * * ****  *** *** * ** * ****     *
** ***       * **  *  *    * * * ***  *** ** **** *   * ***  * ** *   **   * * **
    }

  **** ***** **** * ** **    **  ** * * * *       

  *    ***   *  *    ** *** *** * **    0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 2

Hidden content!
*  * * ** ** * * * * **
int *   *  
{
int  ***
*  *    *** * * ***      * 
    *** **  ** ** *      *
 *  (a %   
{
****
a=b;
****
}
*    * ** **** *** * * *
   *** 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 3

Hidden content!
# include<stdio.h>
int main(void)
{
     *   **   *  **  * * *  a,b,c;
    ** *  *    **  * *  ** ** * *  ** **** * * ** *   
*     ** *  **    *  *  **  *** ** **     *  * * *
*    * * ***** * *  * *  *  (a % b!=0)
    {
  **** *   *  *  ** *  * * * *   ***   * **** ** **    ** *  *  
****** ***  *  *** * * *        *    **  **  ***   * **
* *    *  ** *   **    **   *** ***** *   ******  
* **   * * ***  *  *  **  ** 
** ** **   *  **  ** * ******* ** **  ****    
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 4

Hidden content!
***   ***********   
int main (void)
{
int a,b,c;
*  ******* *    *** ****  **   *
* * *** ** *  **  * ***
while ( a % b != 0){
   **   ****    * * **** * *
  * * *** *     * ** * *  **  *
* *  ** * **   * ****        
}
** ***  ***   **** * ***
 *     0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 5

Hidden content!
# include<stdio.h>
int main(void)
{
* * ** * *   *       *  *  **   a,b,c;
*  **********   ***   *      * **    *  * *******  * 
    ** *  ***  **    *  *** *  * * ******  *   ****
**** ***      **  * *  *** **  (a % b!=0)
    {
 *    ******** **   *    **     **  ** **   *  ***  *   ****
  **   ***   * *** * ***   **  **   *   * *   * *  ***  ***
 *   *   ** * *  * **   **    * ** **  **** * *  *****     
**   **** ****   * ***   
 ** ***   ** * ***  **  ** ** *********       *  *  *  
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 6

Hidden content!
 * ****   ** *** ** *  
int main (void)
{
int a,b,c;
     **     ** *** * ***  *
*  ** *  *  *    *  * * *  **
while ( a % b != 0){
       * *  **  **  *  *
*    ** * ******  * **  *  * 
  * *     ****    *  *  **  * *
}
   *** *  * ***   
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 7

Hidden content!
* ** *  *  * * ** *  ** 
int main * * 
{
int  ****
 ***  ******  ** **  * ** * * * **
***  (a%b != 0){
  *    ****    *  **   = a%b;
 **  *     * ***** **    = b;
 **  ***    ****  ***  **  *  = c;
}
** * ** *  *  **  ***
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 8

Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
**   ***   *** * *   *   * *  a,b,i,max;
 * *  ****  *   * *    *    *     * %d",&a,&b);
******    **  ** **  *  *****    *******  ******         *** *
** * ** *   ** *   ** ** * *
** **  ** *  ** * * ***     ** * ***    ***    * ***   * *  *  *   * *  *  *
 *  ** * **   * ***** ***     * ***** ****     ****  ** *
 * * * ** * *  * **  ****      

 ** ***  * *** ** ** ***  ******    **  *  * ** * *  **  ***  * ** * ***  *    *
    ***  ** *********  * *******     0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

Answer 9

Hidden content!
#include <stdio.h>
#include ***      * **   
int a,b;
int i;
int GCD=0;
int remainder1=0;
int main(){
*   **  **** **      * *** *  * **  *   *  * *    *       **
 ***** **    *  * *  **  (b!=0){
 *** *** ***   *   * **  * *  **   *** *  ***  * **** **  
  * * **  * **  *** ** *** * **  ** * * * ** * *  * *  * *  ** *
**   *    * *** *     * * *  * *   *** *  **       *  * * *****
 *  ************ ** ***   
  * *  ***  ***  *    *   * **  (a==0){GCD=b;}
 *    *   * *  *** ***  *     (b==0){GCD=a;}
  *  ***** * ****** **  **   **   *     *
* *  *  *      ***  * *** ** ** *  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

Answer 10

Hidden content!
#include *** ** **  * * **
int main (void)
{
*  ****** *** * ****** ****  a,b,remainder;
    *** *   *     *****  * **  *** ** *   %d", &a,&b);

   * ****   * **  * *** *        (b != 0){
*   **   *  ***  ***  * *** *   * *  *    * * **     * * * *****  **  * = a % b ;
 **   **** *****  **    *    * *** *  **** ***  * = b ;
 *  *  **  *****   * *  *   * *  ***   * ***** * ***  * * = remainder ;
*  *   *    *  *    ** **    * 

 ** **    *  * * ***  **     **     * ** *  *  *   

* ***  * ******   * ** * *   ** 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output