Finding summary of numbers in an array from first elements pointer

num-sum-array-first-pointer.c

#include<stdio.h>

int array1(int a[],int n)
{
	int *p,sum=0,counter;
	p=&a[0];
	
	for(counter=0;counter<n;counter++)
	   sum+=*(p+counter);
	return sum;      
}
int main()
{
	int num[10]={1,2,3,4,5,6,7,8,9,10};
	int f;
	
    f=array1(num,10);
    printf("Sum of numbers are: %d",f);
}