20.cpp

// Template 1 - display in Cpp with class template
#include<iostream>
using namespace std;
template<class T>                       //this is a class template
class num{
    private:                            //type need not be specified
        T a;
    public:                             //type needs to be specified
        num(T x){
            a = x;
        }
        void display(){
            cout<<a<<endl;
        }
};
int main(){                             //execution starts from the main func.
    num<int>obj1(10);                   //num mein ek integer object made and called.
    obj1.display();                     //another func. called to display it.
    num<float>obj2(1.1);                //same things with another object 2.
    obj2.display();
    return 0;
}