前言Hello大家好,我是文宇.正文3011#include<iostream>usingnamespacestd;intmain(){ inta,b,s; a=880; b=500; s=a*b; cout<<s; return0;}注:没有输入的都可以直接输出.3012#include<iostream>usingnamespacestd;inta,b,t;intmain(){ a=10;b=20