FizzBuzz in C

FizzBuzz.c

#include <stdio.h>
#include <string.h>
int main(int argc, char **argv)
{
  int i = 1;
  while( i <= 100){
    char str[10] = "";
    if( i%3 == 0)
      strcat(str, "Fizz");
    if( i%5 == 0)
      strcat(str, "Buzz");
    int res = strcmp(str, "");
    if( res == 0)
      sprintf(str, "%d", i);

    printf("%s\n",str);
    i++;
  }
  return 0;
}