源程序：
#include <iostream>
using namespace std;
class exa
{
int a;
public:
exa(int b = 5)
{
a = b++;
}
void print()
{
a = a + 1;
cout << a << " ";
}
void print() const
{
cout << a << endl;
}
};
int main()
{
exa x;
const exa y(2);
x.print();
y.print();
system("pause");
return 1;
}
运行结果：
