C Exercises: Print the elements of an array in reverse order

Last update on December 20 2024 13:19:47 (UTC/GMT +8 hours)

Write a program in C to print the elements of an array in reverse order.

Visual Presentation:

C Exercises: Pictorial: Print the elements of an array in reverse order.

Sample Solution:

C Code:

#include <stdio.h>

int main() {
    // Declaring variables
    int n, i, arr1[15];
    int *pt;

    // Displaying the purpose of the program
    printf("\n\n Pointer : Print the elements of an array in reverse order :\n");
    printf("----------------------------------------------------------------\n");

    // Inputting the number of elements for the array (maximum 15)
    printf(" Input the number of elements to store in the array (max 15) : ");
    scanf("%d", &n);

    pt = &arr1[0];  // pt stores the address of base array arr1

    // Inputting elements into the array using pointers
    printf(" Input %d number of elements in the array : \n", n);
    for (i = 0; i < n; i++) {
        printf(" element - %d : ", i + 1);
        scanf("%d", pt); // Accepting the address of the value
        pt++;
    }

    pt = &arr1[n - 1]; // Setting pt to point at the last element of the array

    // Displaying the elements of the array in reverse order using pointers
    printf("\n The elements of array in reverse order are :");
    for (i = n; i > 0; i--) {
        printf("\n element - %d : %d  ", i, *pt); // Printing the element and its value
        pt--; // Moving the pointer to the previous element
    }

    printf("\n\n");
}

Sample Output:

 Pointer : Print the elements of an array in reverse order :                                                  
----------------------------------------------------------------                                              
 Input the number of elements to store in the array (max 15) : 5                                              
 Input 5 number of elements in the array :                                                                    
 element - 1 : 2                                                                                              
 element - 2 : 3                                                                                              
 element - 3 : 4                                                                                              
 element - 4 : 5                                                                                              
 element - 5 : 6                                                                                              
                                                                                                              
 The elements of array in reverse order are :                                                                 
 element - 5 : 6                                                                                              
 element - 4 : 5                                                                                              
 element - 3 : 4                                                                                              
 element - 2 : 3                                                                                              
 element - 1 : 2

Flowchart:

C Programming Code Editor:

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