Write a program to find the sum of n integer numbers using function.

#include<stdio.h>

#include<conio.h>

int sum(int);

void main()

{

 int n,a;

  clrscr();

 printf("\nEnter how many numbers: ");

 scanf("%d",&n);

 a=sum(n);

 printf("\n Sum of %d numbers= %d",n,a);

 getch();

 }

int sum(int n)

{

 int i,s=0;

 for(i=1;i<=n;i++)

 s=s+i;

 return s;

}