How to calculate and print the sum of even and odd integers of the first n natural numbers in C++ Program

C++ Program to calculate and print the sum of even and odd integers of the first n natural numbers.

#include 
#include 
using namespace std; 
int main() 
{ 
int n,i,sumeven=0,sumodd=0; 
cout<<"Enter value of n:"; cin>>n;  
for(i=1;i<=n;++i)
{  
if(i%2==0)   
sumeven+=i;  
else   
sumodd+=i; 
} 
cout<<"\nSum of even Numbers is "<<sumeven; 
cout<<"\nSUm of odd Numbers is "<<sumodd; 
return 0; 
}