#include <stdio.h>

void fibonacci(int n);


int main()
{
  int n;
  printf("\nInput an integer: ");
  scanf("%d", &n);
  fibonacci(n);
  return 0;
}

/* This function computes the first n fibonacci numbers */
// It doesn't return anything

void fibonacci(int n)
{
  int x0 = 0, x1 = 1, x2, i;
  printf("X_0 = %d\n", x0);
  printf("X_1 = %d\n", x1);
  for (i = 2; i < n; i++) {
     x2 = x0 + x1;
     x0 = x1;
     x1 = x2;
     printf("X_%d = %d\n", i, x2);
  }
  return;
}