Win32 以及Win64程序中常见数据类型的字节宽度

1. 测试程序

    std::cout << "Hello World!
";
    cout << "sizeof(int)" << sizeof(int) << endl;
    cout << "sizeof(float)" << sizeof(float) << endl;
    cout << "sizeof(short)" << sizeof(short) << endl;
    cout << "sizeof(char)" << sizeof(char) << endl;
    cout << "sizeof(double)" << sizeof(double) << endl;
    cout << "sizeof(long)" << sizeof(long) << endl;
    cout << "sizeof(long long)" << sizeof(long long) << endl;

    int *pInt;
    char *pChar;
    cout << "sizeof(pInt)" << sizeof(pInt) << endl;
    cout << "sizeof(pChar)" << sizeof(pChar) << endl;

2.测试结果

 （1）Win64程序运行

（2）Win32程序运行

 可以看出，除了指针类型有区别，其他类型一直。