pr11033.cpp

来自「c++编程宝典源码及Quincy99编译器 是《标准C++编程宝典》电子工业出」· C++ 代码 · 共 44 行

////////////////////////////////////////
// File Name: pr11033.cpp
////////////////////////////////////////
#include <iostream>

////////////////////////////////////////
// The AValue class.
////////////////////////////////////////
class AValue
{
    int val;

    // Number of times the object is reported.
    mutable int rptct;

public:
    AValue(int v) : val(v), rptct(0) { }
    ~AValue()
        { std::cout << "Avalue: " << val << " was reported "
                    << rptct << " times."; }
    void report() const;
};

void AValue::report() const
{
    // Modify data member even though const.
    rptct++;

    std::cout << val << std::endl;
}

////////////////////////////////////////
// The main() function.
////////////////////////////////////////
int main()
{
    const AValue aval(123);
    aval.report();
    aval.report();
    aval.report();

    return 0;
}