Write a program in c++ to display n term or natural number and their sum

#include<iostream>

using namespace std; 

int main()

{

int n,i, sum=0;

cout << "Input a number of terms : ";

cin>>n;

cout<<"The natural number upto "<<n<<"th terms are: "<<endl;

for (i=1;i<=n;i++)

{

cout<<i<<" ";

sum=sum+i;

}

cout<<"the sum of the natural number is :"<<sum<<endl;

}

Input a number of terms : 4
The natural number upto 4th terms are:
1 2 3 4 the sum of the natural number is :10

[Program finished]