Arrays for beginners for free.

Array.

Array is basically a contiguous memory allocation of same data type.It can't be of different data type.

It is a homogeneous continuous memory allocation.

We will learn about:

1. What is an Array
2. Declaring and initializing
3. Accessing array element

1.What is an array:

Array is basically a contiguous memory allocation of same data type.It can't be of different data type.

It is a homogeneous continuous memory allocation.

2.Declaring and initializing:

int A[5];

The above statement is used for declaring an array.

int A[5] = {1,2,3,4,5};

The above statement is used for initialing an array.

Program to illustrate difference between declaring and initializing:

#include<iostream>

using namespace std;

int main()

{

int A[5];

int B[5] = {1,2,3,4,5};

for(int i=0;i<5;i++)

{

cout<<"Enter element for array A";

cin>>A[i];

}

for(int i=0;i<5;i++)

{

cout<<A[i]<<" ";

}

cout<<endl;

for(int i=0;i<5;i++)

{

cout<<B[i]<<" ";

}

return 0;

}

3.Accessing array element:

We can access array element with their position index.

Program that will explain how to access array element:

#include<iostream>

using namespace std;

int main()

{

int A[5];

for(int i=0;i<5;i++)

{

cout<<"Enter element for array A";

cin>>A[i];

}

for(int i=0;i<5;i++)

{

cout<<A[i]<<" ";

}

return 0;

}

Programs on array:

1. Insertion in array
2. Deletion in array
3. Finding an index of  a element in array
4. Finding whether an element in present in an array or not
5. How to increase an array size

Share this

Learn programming for free