#include<iostream> //#include<string> using namespace std; int main() { int a = 1; int b = 5; cout << a <<endl ;// 1 cout << ++a << endl;//2 先执行加法运算,在执行语句 cout << a << endl;//2 cout << a++ << endl;//2 先执行语句,再执行加法运算 cout << a << endl;//3 cout << a-- << endl;//3先执行语句,再执行减法运算 cout << a << endl;//2 cout << --a << endl;//1先执行减法运算,在执行语句 cout << a << endl;//1 cout << b <<endl ;//5 cout << ++b << endl;//6 cout << b << endl;//6 cout << b++ << endl;//6 cout << b << endl;//7 cout << b-- << endl;//7 cout << b << endl;//6 cout << --b << endl;//5 cout << b << endl; //5 system("pause>>cout");//不对呀,这个不加#include<string>也没事儿啊 return 0; }