c/c++基本类型sizeof:short,unsigned short,int,unsigned int,long,unsigned long,long long,unsigned long lon

类型字节表

				X86	X86_64
short	signed short	short int	signed short int	2	2
unsigned short			unsigned short int	2	2
int	signed	signed int		4	4
unsigned int	unsigned			4	4
long	signed long	long int	signed long int	4	8
unsigned long			unsigned long int	4	8
long long	signed long long	long long int	signed long long int	8	8
unsigned long long			unsigned long long int	8	8

注意：

x86&x86_64	有char总为1字节
x86&x86_64	有short总为2字节
x86	有long long就是8字节
x86_64	有long就是8字节

例子

#include <iostream>

using namespace std;

int main(int argc, char* argv[])

{

cout << "sizeof short:" << sizeof(short) << endl;

cout << "sizeof unsigned short:" << sizeof(unsigned short) << endl;

cout << "sizeof int:" << sizeof(int) << endl;

cout << "sizeof unsigned int:" << sizeof(unsigned int) << endl;

cout << "sizeof long:" << sizeof(long) << endl;

cout << "sizeof unsigned long:" << sizeof(unsigned long) << endl;

cout << "sizeof long long:" << sizeof(long long) << endl;

cout << "sizeof unsigned long long:" << sizeof(unsigned long long) << endl;

return 0;

}

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c/c++基本类型sizeof:short,unsigned short,int,unsigned int,long,unsigned long,long long,unsigned long lon

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