C++ Arrays

C++ Arrays

Arrays are used to store multiple values in a single variable, instead of declaring separate variables for each value.

Declaring an Array

To declare an array, define the variable type, specify the name of the array followed by square brackets [] and specify the number of elements it should store:

string cars[4];

You can initialize it right away using curly braces:

string cars[4] = {"Volvo", "BMW", "Ford", "Mazda"};
int myNum[3] = {10, 20, 30};

Accessing Elements

You access an array element by referring to the index number. Array indexes start with 0: [0] is the first element, [1] is the second element, etc.

cout << cars[0]; // Outputs "Volvo"

Changing an Array Element

To change the value of a specific element, refer to the index number:

cars[0] = "Opel";
cout << cars[0]; // Now outputs "Opel"

Arrays are incredibly useful when you need to group related items together.