Sum of the series Using Constructor in C++

Sum of the series Using Constructor in C++.

The constructor T4Tutorails_Series(int number) is a member function of the class T4Tutorails_Series. The constructor T4Tutorails_Series(int number) has the same name as the name of its class T4Tutorails_Series.

When a new object obj(5) of the class T4Tutorails_Series is executed, the constructor T4Tutorails_Series(int number) also executed automatically.
The constructor T4Tutorails_Series(int number) has no data type. Even we can’t use void also.
The constructor T4Tutorails_Series(int number) can have arguments.
The constructor T4Tutorails_Series (int number) can be only public.
There is no inheritance of the constructor T4Tutorails_Series (int number).

#include <iostream>
using namespace std;
class T4Tutorails_Series
{
	public:
		T4Tutorails_Series (int number)
		{
			int k=9;
			int sum=0;
				cout<<"Please input the number of terms.";
				cin>>number;
				for(int i=1;i<=number;i++)
				{
					sum=sum+k;
					k=k*10+9;
				}
				cout<<"The sum of T4Tutorails_ Series is "<<sum;
		}
	};
		int main()
		{
			T4Tutorails_Series obj(5);
		}

#include <iostream>

using namespace std;

class T4Tutorails_Series

{

public:

T4Tutorails_Series (int number)

{

int k=9;

int sum=0;

cout<<"Please input the number of terms.";

cin>>number;

for(int i=1;i<=number;i++)

{

sum=sum+k;

k=k*10+9;

}

cout<<"The sum of T4Tutorails_ Series is "<<sum;

}

};

int main()

{

T4Tutorails_Series obj(5);

}

Output

Please input the number of terms. 5

The sum of T4Tutorails_ Series is 111105.

Sum of the series Using Constructor in C++

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