It’s very easy to include a class with a C++ main program. Just follow the following steps;
Step 1: Start with header files.
Step 2: adding the namespace.
Step 3: Declaring and defining the class.
Step 4: Starting the main function.
Step 5: In the main function, creates the one or many objects of the class.
Step 6: Call the functions of the class in the main function with the help of class objects.
Let’s see it with an example.
Example of including a class with C++ main program
C++ program to print a hollow square or rectangle star pattern by using the class with C++ main program.
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 |
#include<iostream> using namespace std; class a { protected: int n,i,j; public: int out() { cout<<"enter number"; cin>>n; for(i=1;i<=n;i++) { for( j=1;j<=n;j++) { if(i==1||i==n||j==1||j==n) { cout<<"*"; } else { cout<<" "; } } cout<<endl; } } }; int main() { a c; c.out(); } |
Output
