Append Item In Array In C++

In this article, we will focus on how to append an item into an array in C++. This tutorial is aimed at individuals who have basic knowledge of C++ and want to understand how to manipulate arrays effectively.

Code snippet for Appending Item in Array in C++

#include<iostream> 
using namespace std;

int main() 
{ 
  int arr[5] = {1, 2, 3, 4, 5};

  // Append 6 into the array
  arr[5] = 6; 

  for (int i = 0; i < 6; i++)
    cout << arr[i] << " "; 

    return 0; 
} 

Code Explanation for Appending Item in Array in C++

In the code snippet above, we start by including the <iostream> library. This header file is used for handling the input-output operations in C++. The “using namespace std” is used to save the programmer from continuously using “std” before each C++ standard library object.

#include<iostream> 
using namespace std;

We then define the main function which is the entry point of our program.

int main() 
{ 
  // code
} 

Inside the main function, we declare an array of integers “arr” with a size of 5 and initialize it with values 1 through 5.

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

Next, we append an integer 6 into the array at the 6th index. Here, it’s important to note that C++ uses a 0-based index, that means the first position of the array starts at “0”.

arr[5] = 6; 

After, we loop through the array printing each item on the screen. The for loop runs from i=0 till i=5 (which is less than 6).

for (int i = 0; i < 6; i++)
    cout << arr[i] << " ";

Finally, our program ends returning 0 from the main function, indicating that the program has been executed successfully.

return 0; 

By understanding and using this simple code snippet, you will be able to append items into arrays in C++.