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HCF and LCM in C

#include <stdio.h>
int main() {
  int a, b, x, y, t, gcd, lcm;
  printf("Enter two integers\n");
  scanf("%d%d", &x, &y);
  a = x;
  b = y;
  while (b != 0) {
    t = b;
    b = a % b;
    a = t;
  gcd = a;
  lcm = (x*y)/gcd;
  printf("Greatest common divisor of %d and %d = %d\n", x, y, gcd);
  printf("Least common multiple of %d and %d = %d\n", x, y, lcm);
  return 0;