Working with Arrays in C#

int[] anArray;
 
int sum = sumArray(anArray);
 
int sumArray(int[] arr){
    int i;
    int total = 0;
    for(i = 0; i < arr.length; i++){
        total += arr[i];
    }
    return total;
}

Declaring an Array

Instantiating an Array

Initializing an Array

Accessing Members of an Array

Using foreach on an Array

int[] numbers; // declare numbers as an int array of any size
numbers = new int[10];  // numbers is a 10-element array
numbers = new int[20];  // now it's a 20-element array