#include <iostream> using namespace std; int main() { int x,y; cin>>x>>y; if(x<y){ swap(x,y); } cout<<x+y<<" "<<x-y<<" "<<x*y<<" "<<x/y<<" "<<x%y; return 0; } 两点一、不用管小数和越界二、不用ifelse,直接交...