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