c++中int、 long int、long long int的取值范围

#include <iostream>
#include <climits>
using namespace std;

int main() {
    cout << "=== C++ 整数类型取值范围 ===" << endl;

    cout << "int:                " << INT_MIN << " ~ " << INT_MAX << endl;
    cout << "unsigned int:       0 ~ " << UINT_MAX << endl;
    cout << "long int:           " << LONG_MIN << " ~ " << LONG_MAX << endl;
    cout << "unsigned long int:  0 ~ " << ULONG_MAX << endl;
    cout << "long long int:      " << LLONG_MIN << " ~ " << LLONG_MAX << endl;
    cout << "unsigned long long: 0 ~ " << ULLONG_MAX << endl;

    cout << "\n=== 各类型占用字节数 ===" << endl;
    // table键对齐.
    cout << "int:                " << sizeof(int) << " bytes" << endl;
    cout << "unsigned int:       " << sizeof(unsigned int) << " bytes" << endl;
    cout << "long int:           " << sizeof(long int) << " bytes" << endl;
    cout << "unsigned long int:  " << sizeof(unsigned long int) << " bytes" << endl;
    cout << "long long int:      " << sizeof(long long int) << " bytes" << endl;
    cout << "unsigned long long: " << sizeof(unsigned long long) << " bytes" << endl;

    return 0;
}