Reverse the array using another array

Posted on Apr 23, 2020

C program to reverse the array using another array.

Program

#include<stdio.h>
#include<conio.h>
#define MAX 50

void read_array(int a[MAX], int n)
{
    int i;
    for(i=0;i<n;i++)
    {
        printf("Element %d\t:",i+1);
        scanf("%d",&a[i]);
    }
}

void print_array(int a[MAX], int n)
{
    int i;
    for(i=0;i<n;i++)
    {
        printf("Element %d\t:%d\n",i+1,a[i]);
    }
}

void rev_array(int a[MAX], int b[MAX], int n)
{
    int i;
    for(i=0;i<n;i++)
    {
        b[i] = a[n-i-1];
    }
}

void main()
{
	int arr[MAX], rev_arr[MAX];
    int i, n;

    printf("Enter the number of elements in the array\t:");
    scanf("%d",&n);

    printf("Enter the elements of first array\n");
    read_array(arr, n);

    rev_array(arr, rev_arr, n);

    printf("\nArray elements after reversing\n");
    print_array(rev_arr, n);

    getch();
}

Output

Enter the number of elements in the array       :5
Enter the elements of first array
Element 1       :1
Element 2       :2
Element 3       :3
Element 4       :4
Element 5       :5

Array elements after reversing
Element 1       :5
Element 2       :4
Element 3       :3
Element 4       :2
Element 5       :1