선언방법종류uint8 ~ 64int8 ~ 64float32, float64complex64, complex128byteruneintuint
선언 방법종류uint8 ~ uint64int8 ~ int64float32, float64complex64, complex128int, uintbyte, rune
선언 방법종류uint8 ~ uint64int8 ~ int64float32, float64complex64, complex128int, uintbyte, rune