C++ Arrays

Arrays & Strings

C++ Arrays

An array is a one of the data structure in C++, that can store a fixed size sequential collection of elements of same data type.

Define an Array in C++

Syntax:

type arrayName [ arraySize ];

An array type can be any valid C++ data types, and array size must be an integer constant greater than zero.

Example:

double salary[15000];

Initialize an Array in C++

Arrays can be initialized at declaration time:

int age[5]={22,25,30,32,35};

Initializing each element separately in loop:

int newArray[5];
int n = 0;

// Initializing elements of array seperately
for(n=0;n<sizeof(newArray);n++)
{
  newArray[n] = n; 
}

A Pictorial Representation of the Array

Accessing Array Elements in C++

int newArray[10];
int n = 0;

// Initializing elements of array seperately
for(n=0;n<sizeof(newArray);n++)
{
  newArray[n] = n;
}

int a = newArray[5]; // Assigning 5th element of array value to integer 'a'.

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