My best C solution (scores a 96):
#define d printf(
main(i){i<101?(!(i%3)?d"Fizz"):0)|(!(i%5)?d"Buzz"):0)?d"\n"):d"%d\n",i),main(i+1):0;}
#define d printf(
main(i){i<101?(!(i%3)?d"Fizz"):0)|(!(i%5)?d"Buzz"):0)?d"\n"):d"%d\n",i),main(i+1):0;}
#define P printf(
main(n){(n%3?0:P"Fizz"))+(n%5?0:P"Buzz"))?:P"%d",n);P"\n");n>99?:main(n+1);} #define d printf(
main(i){i<101?(i%3?0:d"Fizz"))|(i%5?0:d"Buzz"))?d"\n"):d"%d\n",i),main(i+1):0;}