i mean that
i juz put the package as at declaration
for easy my work, i use no to help customer to choose the packages
that's y i cout<< "\n1-package A \n2- package B" ;
then i dun know what should i put in cin
You dont put things in cin. cin is a stream operator; you use it to extract elements from a stream.
As an aside, the language of your post will (in the general case) cause less people to respond seriously. 'Q' is not a suitable substitution for 'Question'; juz is not a word and should not be used in place of just; randomly dropping letters is not appropriate. This is, of course, only my opinion - you can feel free to discard it as you see fit.
using namespace std;
cout<<"Choose a package: 1 = Package A, 2 = Package B\n";
cin>>Package; //This is how u get the user choice..
if(Package == '1') //I guess u mean split choice by if and else meaning if this then... else...
else if(Package == '2') //The If and else statement will let do something depending on the choice made.