Program to calculate GCD

/* Aim : program to print GCD*/ #include<stdio.h> #include<conio.h> int a,b,i,k; int main() { printf("Enter numbers whom you want GCD \n"); scanf("%d%d",&a,&b); for(; ;) { i=a%b; if(i==0) break; a=b; b=i; } printf("GCD is : %d",b); getch(); }