C++ program to find sum of n natural numbers. - coderforcoders

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Wednesday, 13 March 2019

C++ program to find sum of n natural numbers.

#include<iostream>
using namespace std;
class sum{
public:
int i,sum=0;
int findSum(int n)
{
for(i=1;i<=n;i++)
sum=sum+i;
return sum;
}
};
int main()
{
sum obj1;
int result,n;
cout<<"Please enter the value of n\n";
cin>>n;
result=obj1.findSum(n);
cout<<"The sum of first "<<n<<" natural numbers is "<<result<<endl;
return 0;
}

Output 1:
Please enter the value of n
5
The sum of first 5 natural number is 15

Output 2:
Please enter the value of n
10
The sum of first 5 natural number is 55

Output 3:
Please enter the value of n
15
The sum of first 5 natural number is 120



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