Greatest Common Divisor of two integers in C

A simple program Greatest Common Divisor of two integers in C language.

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Program Listing

#include <stdio.h>

#include <conio.h>

void main() {

  int x, y,a,b,t,G;

  clrscr();

  printf("Enter two integers\n");

  scanf("%d %d", &x, &y);

  a = x;

  b = y;

  while (b != 0) {

    t = b;

    b = a % b;

    a = t;

  }

  G = a;

  printf("GCD for %d and %d is ", x, y);

  printf("%d",G);

  getch();

}