limits.cpp

来自「C++ Primer Plus（第五版）第3章例题代码」· C++ 代码 · 共 25 行

// limits.cpp -- some integer limits
#include <iostream>
#include <climits>              // use limits.h for older systems
int main()
{
    using namespace std;
    int n_int = INT_MAX;        // initialize n_int to max int value
    short n_short = SHRT_MAX;   // symbols defined in limits.h file
    long n_long = LONG_MAX;

    // sizeof operator yields size of type or of variable
    cout << "int is " << sizeof (int) << " bytes." << endl;
    cout << "short is " << sizeof n_short << " bytes." << endl;
    cout << "long is " << sizeof n_long << " bytes." << endl << endl;

    cout << "Maximum values:" << endl;
    cout << "int: " << n_int << endl;
    cout << "short: " << n_short << endl;
    cout << "long: " << n_long << endl << endl;

    cout << "Minimum int value = " << INT_MIN << endl;
    cout << "Bits per byte = " << CHAR_BIT << endl;
    return 0;
}