类型 取值范围 长度(字节)
bool true、false 1
char -128 到 127,或者 0 到 255 1
signed char -128 到 127 1
unsigned char 0 到 255 1
short -32768 到 32767 2
unsigned short 0 到 65535 2
int -2147483648 到 2147483647 4
unsigned int 0 到 4294967295 4
long -9223372036854775808 到 9223372036854775807 8
unsigned long 0 到 18446744073709551615 8
long long -9223372036854775808 到 9223372036854775807 8
unsigned long long 0 到 18446744073709551615 8