Sum of N numbers

Problem: Program to find sum of N natural numbers.

Given a number, n, you need to find sum all numbers from 1 to n.

#include<stdio.h>

int main() {
  int n, sum=0;
  scanf("%d",&n);
  for(int i=1;i<=n;i++){
    sum += i;
  }
  printf("%d\n",sum);
  return 0;
}