#include <iostream>
int main(void)
{
int a = 100, b = 40;
//理解++在前还后的区别；
a = b++; //a = b ; b= b+1;
//a = ++b; //b = b+1; a = b;
std::cout << a << std::endl;
std::cout << b << std::endl;
return 0;
}
原文：http://www.cnblogs.com/delphiclub/p/5382096.html