In this post, we will make a program to reverse an array in c++ using Functions which takes all the elements of the array using for loop from the user, and then we will call our reverse function. We will also print the array in reverse order in C++ using for loop.
How to Reverse an Array in C++ using Functions
#include<iostream>
void rev(int* a,int N);
using namespace std;
int main()
{
int arr[1000],n;
cout<<"\n Enter number of Elements:";
cin>>n;
cout<<"\n Enter Array:";
for (int i = 0; i < n; i++)
{
cin>>arr[i];
}
cout<<"\n Array:";
for(int i=0; i<n;i++)
cout<<arr[i]<<" ";
rev(arr,n);
return 0;
}
void rev(int* a,int N)
{
int j, temp;
j=N-1;
for(int i=0;i<j;i++,j--)
{
temp=a[i];
a[i]=a[j];
a[j]=temp;
}
cout<<"\n Reverse Array:";
for(int i=0; i<N;i++)
cout<<a[i]<<" ";
}
Enter the number of Elements:5
Array:11 22 33 44 55
Reversed Array:55 44 33 22 11
Reverse an array in c++ without using temp variable
#include<iostream.h>
int main()
{
int A[5],i,j,n;
cout<<"\n Enter the size of array:";
cin>>n;
//n is size of array
cout<<"\n Enter an array:";
for(i=0;i<n;i++)
cin>>A[i];
cout<<"\n Reverse array:";
for(j=n-1;j>=0;j--)
cout<<A[j]<<" ";
}
Enter the size of the array: 5
Enter an array:1 2 3 4 5
Reverse array:5 4 3 2 1
- Basics of c++ programming language
- for loop
- Array initialization
We did not reverse an array; we just printed the array in reverse order using "for loop" by iterating from the last element to the first element of the array.
Algorithm to reverse an array in C++
- Initialize an integer array.
- Input the size of an array by the user.
- Input elements of an array using for loop.
- Iterate over the array in reverse order.
If you like this program or have any problem/difficulty with this program, then let me know by commenting below or contacting us.
About this program:
Siddharth Jha writes this program. It is one of the simplest ways to print the reverse of an array in c++.
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