C++ Programs to Reverse Array Element Using Function

In this tutorial you will learn about the C++ Programs to Reverse Array Element Using Function and its application with practical example.

In this tutorial, we will learn to create a C++ program that will Reverse Array Element Using Function using C++ programming.

Table Of Contents−

C++ Programs to Reverse Array Element Using Function

Reversing of the array.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following C++ programming topics:

Operators in C++ Programming.
Basic Input and Output function in C++ Programming.
Basic C++ programming.

For loop in C++ Programming.
Functions in C++ Programming.

Reversing of the array.

The array stores multiple elements in a single variable using the different index values. All the array operations are performed on the index values for manipulation in an array. In this tutorial, we will reverse the elements of the array from start to end.

For example :-
Take an array 
A[]={ a , b , c , d }
The index of values are
a = 0;
b = 1;
c = 2;
d = 3;
now we will reverse that array by putting the first value to last and so on.
By reversing the index values.
it means new array will ne 
A[] = { d , c , b , a };

For example :-

Take an array

A[]={ a , b , c , d }

The index of values are

a = 0;

b = 1;

c = 2;

d = 3;

now we will reverse that array by putting the first value to last and so on.

By reversing the index values.

it means new array will ne

A[] = { d , c , b , a };

Algorithm:-

STEP 1: START

STEP 2: INITIALIZE arr[] = { 1, 2, 3, 4, 5 }

STEP 3: length= sizeof(arr)/sizeof(arr[0])

STEP 4: PRINT ARRAY NORMAL

STEP 5: REVERSING ARRAY

STEP 6: PRINT "REVERSE ORDER OF ARRAY IS AS FOLLOWS"

STEP 7: RETURN 0.

STEP 8: END.

STEP 1: START

STEP 2: INITIALIZE arr[] = { 1, 2, 3, 4, 5 }

STEP 3: length= sizeof(arr)/sizeof(arr[0])

STEP 4: PRINT ARRAY NORMAL

STEP 5: REVERSING ARRAY

STEP 6: PRINT "REVERSE ORDER OF ARRAY IS AS FOLLOWS"

STEP 7: RETURN 0.

STEP 8: END.

Programs to Reverse Array Element Using Function:-

In the program, First, we will initialize the elements of an array. Then we will reverse that array using C++ Programming Language.

Program:-

To Reverse Array Element Using Function

#include <iostream>
#include <algorithm>
using namespace std;
 
// Utility function to print contents of an array 
void print(int arr[], int n)
{
    for (int i = 0; i < n; i++) {
        cout << arr[i] << " ";
    }
}
 
// Utility function to reverse elements of an array
void reverse(int arr[], int n) {
    reverse(arr, arr + n);
}
 
int main()
{
    //declaring the variables for the program.
    int arr[] = { 1, 2, 3, 4, 5 };
    
    //finding the size of array.
    int n = sizeof(arr)/sizeof(arr[0]);
    //Printing the normal array.
     cout << "Elements in array " ;
    for (int i = 0; i < n; i++) {
        cout  << arr[i] << " " <<endl;
    }
    //passing the array to the reverse function
    reverse(arr, n);
    //Printing the out array
    cout << "Reverse Elements in array " ;
    print(arr, n);
 
    return 0;
}

#include <iostream>

#include <algorithm>

using namespace std;

// Utility function to print contents of an array

void print(int arr[], int n)

{

for (int i = 0; i < n; i++) {

cout << arr[i] << " ";

}

// Utility function to reverse elements of an array

void reverse(int arr[], int n) {

reverse(arr, arr + n);

}

int main()

{

//declaring the variables for the program.

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

//finding the size of array.

int n = sizeof(arr)/sizeof(arr[0]);

//Printing the normal array.

cout << "Elements in array " ;

for (int i = 0; i < n; i++) {

cout << arr[i] << " " <<endl;

}

//passing the array to the reverse function

reverse(arr, n);

//Printing the out array

cout << "Reverse Elements in array " ;

print(arr, n);

return 0;

}

Output:-

In the above program, we have first initialized the required variable

arr = it will hold the elements in an array.
n = it will hold the number of elements in an array.
i = it will hold the integer value to control the array.

Printing elements of the array

Calling of user-defined function in program.

Program Code for reverse function.

Program Code for Print function.

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C++ Programs to Reverse Array Element Using Function