Go’s integer types are uint8, uint16, uint32, uint64, int8, int16, int32, and int64. 8, 16, 32, and 64 tell us how many bits each of the types use. uint means “unsigned integer” while int means “signed integer.” Unsigned integers only contain positive numbers (or zero). In addition, there two alias types: byte (which is the same as uint8) and rune