#define RANGE(a,b,c) ((a) <= (b) && (b) <= (c)) int sub(int c) { if (RANGE('0', c, '9')) return 1; return (('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z')); } extern void __llvm_profile_write_file(void); int main(int c, char **v) { return (c > 1 ? sub(c) : 0); }