#include<iostream> using namespace std; int main(){ /** char a; cin>>a; cout<<" "<<" "<<a<<endl; cout<<" "<<a<<a<<a<<endl; cout<<a<<a<<a<<a<<a; int a; cin>>a; if(a>=90){ cout<<'A'; }else if(a>=80){ cout<<'B'; }else if(a>=70){ cout<<'C'; }else if(a>=60){ cout<<'D'; }else{ cout<<'E'; } char a; cin>>a; if('A'<=a && a>='Z'){ cout<<"Upper Letter"; }else if('a'<=a && a>='z'){ cout<<"Lower Letter"; }else if('9'<=a && a>='0'){ cout<<"Digital"; }else{ cout<<"other"; } **/ int a; cin>>a; switch(a){ case 1: case 3: case 5: case 7: case 8: case 10: case 12: cout<<31; break; case 4: case 6: case 9: case 11: cout<<30; break; case 2: cout<<29; break; default: cout<<"Invalid."; } return 0; }