C: FizzBuzzWizz

#include <stdio.h>
int main(int argc, char *argv){
  int i;
  for(i=0; i < 101; i++) {
 switch((i%7 == 0) << 2 | (i%5 == 0) << 1 | (i%3 == 0)) {
 case 0: printf("%d\n", i); break;
 case 1: printf("Fizz\n"); break;
 case 2: printf("Buzz\n"); break;
 case 3: printf("FizzBuzz\n"); break;
 case 4: printf("Wizz\n"); break;
 case 5: printf("FizzWizz\n"); break;
 case 6: printf("BuzzWizz\n"); break;
 case 7: printf("FizzBuzzWizz\n"); break;
 }
  }
}

C: FizzBuzz

#include <stdio.h>
int main(int argc, char *argv) {
  int i;
  for(i=0; i < 101; i++) {
    switch((i%5 == 0) << 1 | (i%3 == 0)) {
      case 0: printf("%d\n", i); break;
      case 1: printf("Fizz\n"); break;
      case 2: printf("Buzz\n"); break;
      case 3: printf("FizzBuzz\n"); break;
    }
  }
  return 0;
}