Arrays

In C++, an array is a variable that can store multiple values of the same type. For example,

Suppose a class has 27 students, and we need to store all their grades. Instead of creating 27 separate variables, we can simply create an array:

double grade[27];

Here, grade is an array that can hold a maximum of 27 elements of double type.

In C++, the size and type of arrays cannot be changed after its declaration.

C++ Array Declaration

dataType arrayName[arraySize];

For example,

int x[6];

Here,

• int - type of element to be stored
• x - name of the array
• 6 - size of the array

Access Elements in C++ Array

In C++, each element in an array is associated with a number. The number is known as an array index. We can access elements of an array by using those indices.

// syntax to access array elements
array[index];

Consider the array x we have seen above.