测试数据类型在32位系统下字节

#include <iostream>using namespace std;int main(){cout << sizeof(char) << endl; cout << sizeof(short) << endl; cout << sizeof(unsigned) << endl; cout << sizeof(int) << endl; cout << sizeof(unsigned int) << endl; cout << sizeof(long) << endl; cout << sizeof(unsigned long) << endl; cout << sizeof(float) << endl; cout << sizeof(double) << endl; cout << sizeof(void *) << endl;}