how to define a class in a c++ object oriented program

Let’s begin with defining a class in the C++ object-oriented program.

Program

Write a program in C to display such a pattern for n number of rows using a number which will start with the number 1 and the first and the last number of each row will be 1. The pattern is as follows:

#include<iostream>
using namespace std;
class T4Tutorials
{
	protected:
		int i,j,k,l,n;
	public:
		int show()
		{
			cout<<"num of rows :";
			cin>>n;
			for(i=1;i<=n;i++)
			{
				for(l=1;l<=n-i;l++)
				{
						cout<<" ";
				}
				for(j=1;j<=i;j++)
				{
						cout<<j;
					}
					for(k=i-1;k>=1;k--)
					{
						cout<<k;
					}
					cout<<endl;
				}
			}
};
int main()
{
	T4Tutorials obj;
	obj.show();
}