#include <stdlib.h>
#include <stdio.h>

#define MAXFIB 100

int main(void) {
  int n, i;
  int fib[MAXFIB];

  fib[0]=0;
  fib[1]=1;
    printf("Calculate which Fibonacci number? ");
  scanf("%d",&n);

  if ((n < 0) || (n > MAXFIB-1)) {
    printf("Not an appropriate integer.\n");
  } else {
    for(i=2; i <= n; i++) {
      fib[i] = fib[i-1]+fib[i-2];
    }
    printf("Fibonacci number %d is %d.\n", n, fib[n]);
  }
  return EXIT_SUCCESS;
}