#include <iostream> using namespace std; int main() { // 对变量 a 的操作 int a = 10; cout << "a: " << a << endl; a = a + 5; cout << "a+5: " << a << endl; ++a; cout << "a++: " << a << endl; a += 5; cout << "a+=5: " << a << endl; // 对变量 b 的操作 int b = 50; cout << "b: " << b << endl; b = b - 10; cout << "b-10: " << b << endl; --b; cout << "b--: " << b << endl; b -= 10; cout << "b-=10: " << b << endl; return 0; }