Thread: size of array - why function gives size ONE only

the user-defined function size_of_array(numA) is meant to give the size of numA which is 5 but it gives 1... I wonder where went wrong? can anyone help pls...
insert

Code:

#include <iostream>
using namespace std;
int size_of_array(int numA[]);

int main()
{
	int numA[]={0,1,2,3,4};
	int i=0;
	int total=0;

	for(i=0; i<size_of_array(numA); i++)
	{
		total+=numA[i];
	}
	float average=total/i;
	cout << "average is "<<average;
	
	return 0;
}
int size_of_array(int numA[])
{
		int num_of_elements=sizeof(numA)/sizeof(int);
		return num_of_elements;
}