Program to find average of n number in C language

/* avg of n number */
# include <stdio.h>
void main ()
{
int a,n,i=0 ;
float avg ;
int sum =0 ;
clrscr () ;
printf ("/n how many number you want to add:") ;
scanf ("%d", & n) ;
while ( i<n )
{
printf ("/n enter a number:") ;
scanf ("%d", & a) ;
sum = sum+a ;
i++ ;
}
avg =sum/n ;
printf ("/n avg=%f",avg) ;
getch () ;
}