To pass one dimensional array to function

If we want to pass one dimensional array into function it can be done in this way I have taken examples of finding average of the sum of the numbers entered. In this programme i have taken numbers myself without using scanf.
But if anyone wants to input value themslves then scanf can be used. The main source code of this programme is:

	#include<stdio.h>
	#include<conio.h>
	float average(float a[]);
	int main()
	{
	float num[]={2.6,3.4,8.4,2.2,6.3};
	float avg;
	avg=average(num);
	printf("average of values in array=%f",avg);
	getch();
	}
	float average(float a[])
	{
	int i;
	float sum,avg;
	sum=0;
	for(i=0;i<5;i++)
	{
	sum=sum+a[i];
	}
	avg=sum/5;
	return avg;}

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