Program to calculate sum of n nos using for loops in c++ language.

//WAP to calculate sum of n nos using for loops in c++ language.
 
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int i,n,sum=0;
cout<<"enter the value of n:"<<endl;
cin>>n;
for(i=1;i<=n;i++)
{
sum=sum+i;
}
cout<<"the sum of n nos is:"<<sum;
getch();
}
Output:-