자료찾다가 알게된건데.

#define S8        signed char
#define S16        signed short
#define S32        signed int
#define S64        signed long long

#define U8        unsigned char
#define U16        unsigned short
#define U32        unsigned int
#define U64        unsigned long long

이렇게 선언하고 쓰던데. 위와 같이 많이들 사용하나요?