++ 前置自加 1 运算符重载示例

/*******************************************************
*author：彭晓林
*copyright: 版权所有，翻版不究
*function: ++运算符前置重载
******************************************************/

#include <iostream>
#include <string>

using namespace std;

class DEMO
{
public:
DEMO(int a)
{
x = 1;
}
void set(int a)
{
x = a;
}
void operator++(){++x;}

void print();

private:
int x;
};

void DEMO::print()
{
cout<<"x = "<<x<<endl;
}

int main()
{
DEMO test(1);

test.print();
++test;
test.print();

while(1);
}s