Find the average of n numbers

This program accepts n numbers as input and find's average of it.The user is first prompted to enter n number.These n numbers are stored in float array.The sum of these numbers is stored in variable sum.Later this sum is divided by n to get the average of n numbers .

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

void main()
{
	float a[20],sum,avg;
	int n,i;
	clrscr();
	printf("\nEnter n : ");
	scanf("%d", &n);
	printf("\nEnter %d numbers \n",n);
	for(i=0;i < n;i++)
	{
	   scanf("%f", &a[i]);
	}
	sum = 0;
	for(i=0;i < n;i++)
	{
		sum += a[i];
	}
	avg = sum / n;
	printf("\nEntered %d numbers are \n",n);
	for(i=0;i < n;i++)
	{
		printf("\n%.2f",a[i]);
	}
	printf("\nThe average of numbers is %f",avg);
} // main