18.21. Write a function that gets an array and returns sum.

#include<stdio.h>
#include<conio.h>
int Sum(int a[], int n)
{
int sum=0,i;

for(i=0;i<n;i++)

sum=sum+a[i];

return sum;

}

void main ()
{
int i,n,a[100];
clrscr();
printf("How many numbers: ");
scanf ("%d", &n);

for(i=0;i<n;i++)

scanf("%d",&a[i]);
printf("Sum %d=", Sum(a,n)) ;
getch ();
}