C++ Program to Find Sum of Square of n Natural Numbers

Let us write a c++ program to find sum of square of n natural numbers

/*C++ Program to Find Sum of Square of n Natural Numbers*/

#include<iostream>

using namespace std;

int main()

{

    int n,i,t;

    int s=0;

    cout<<"Enter the value of n : ";

    cin>>n;

    for(i=1;i<=n;i++)

    {

        t=i*i;

        s=s+t;

    }

    cout<<endl;

    cout<<"Sum of square of  first "<<n<<" natural numbers is "<<s;

    return 0;

}

OUTPUT:

Enter the value of n : 5

Sum of square of first 5 natural numbers is 55

Let us see another c++ program to find sum of square of n natural numbers.

/*C++ Program to Find Sum of Square of n Natural Numbers Using Function*/

#include<iostream>

using namespace std;

void sumofsq(int n);

int main()

{

    int n;

    cout<<"Enter the value of n : ";

    cin>>n;

    sumofsq(n);

    return 0;

}

void sumofsq(int n)

{

    int t,i,s=0;

    for(i=1;i<=n;i++)

    {

        t=i*i;

        s=s+t;

    }

    cout<<endl;

    cout<<"Sum of square of first "<<n<<" natural numbers is "<<s;

}

OUTPUT:

Enter the value of n : 5

Sum of square of first 5 natural numbers is 55