Array Sum Program

#include <stdio.h>
int main() {
int array[10] = {9, 8, -15, 30, 0};
int sum, loop;
sum = 0;
for(loop = 9; loop >= 0; loop--) {
sum = sum + array[loop];      
}
printf("Sum of array is = %d", sum);   
return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main()
{
int i, num[5]={9, 8, -15, 30, 0}, sum=0;
for(i = 0; i < 5; ++i)
{
sum += num[i];
}
cout << "Sum of array is =  " << sum;
return 0;
}

class LFC 
{ 
static int arr[] = {9, 8, -15, 30, 0}; 
// method for sum of elements in an array  
static int sum() 
{ 
int sum = 0; // initialize sum 
int i; 
// Iterate through all elements and add them to sum 
for (i = 0; i < arr.length; i++) 
sum +=  arr[i]; 
return sum; 
} 
// Driver method 
public static void main(String[] args)  
{ 
System.out.println("Sum of array is = " + sum()); 
} 
} 

numbers = [9, 8, -15, 30, 0]
# start parameter is not provided
numbers_sum = sum(numbers)
print ("Sum of array is = ",numbers_sum) 

using System;
using System.Collections.Generic;
using System.Linq;
class LFC
{
static void Main()
{
//
// Declare two collections of int elements.
//
int[] array1 = { 9, 8, -15, 30, 0 };
int sum1 = array1.Sum();
Console.WriteLine("Sum of array is = "+sum1);
}
}

$a=array(9, 8, -15, 30, 0);
echo "Sum of array is ";
echo array_sum($a);