Program to print first n natural numbers and their sum

#include<stdio.h>
#include<conio.h>

void main()
{
int n,i,sum=0;
clrscr();
printf("\n How many numbers : ");
scanf("%d",&n);

for(i=1;i<=n;++i)
{
printf("\n%d",i);
sum=sum+i;
}
printf("\n\n Sum of first n natural numbers is : %d",sum);
getch();
}



                                                Output