# include<iostream> # include<iomanip> using namespace std; int main(){ //1.三种水果的平均价格 cout<<fixed<<setprecision(3)<<(5+8+12)/3.0<<endl; //2.banana,39,5 cout<<39/5<<" "<<39%5<<endl; //3.apple,39,8 cout<<39/8<<" "<<39%8<<endl; //4.grape,39,12 cout<<39/12<<" "<<39%12<<endl; return 0; }