A C program to find the GCD of two positive integers (entered by the user) using recursion in C programming.
int hcf(int n1, int n2);
int n1, n2;
printf("Enter two positive integers: ");
scanf("%d %d", &n1, &n2);
printf("G.C.D of %d and %d is %d.", n1, n2, hcf(n1,n2));
int hcf(int n1, int n2)
if (n2 != 0)
return hcf(n2, n1%n2);
Enter two positive integers: 366
G.C.D of 366 and 60 is 6.