Sum of Natural Numbers

Wap to print the sum of first n natural numbers.

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int i,sum=0,n;

cout<<"no. of natural numbers";

cin>>n;

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

{

cout<<"\n"<<i;

sum+=i;

}

cout<<"\n"<<" sum of first"<<n<<"natural number is"<<sum<<"\n";

getch();

}

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OUTPUT:

no. of natural numbers 5

1

2

3

4

5

sum of first 5 natural number is 15

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