#include //find sizeof's certain compile options on different architectures int main() { printf("char: %d\n", sizeof(char)); printf("short: %d\n", sizeof(short)); printf("int: %d\n", sizeof(int)); printf("long: %d\n", sizeof(long)); printf("long long: %d\n", sizeof(long long)); printf("int *: %d\n", sizeof(int *)); return 0; }