G.C.D OF TWO NUMBERS

#include<stdio.h>

#include<conio.h>

void main()

{

  int n1,n2;

  clrscr();

  printf("\nEnter two numbers:");

  scanf("%d %d",&n1,&n2);

  while(n1!=n2)

  {

            if(n1>n2)

                        n1=n1-n2;

            else

                        n2=n2-n1;

  }

   printf("\nGCD=%d",n1);

  getch();

}