Question

Using C programming

Write a function that reverses the elements of an array of integers so that the first becomes the last. Hint use a temporary variable for swapping values. Test with an odd and even number of elements

Answer 1

#include <stdio.h>
#include <malloc.h>

void reverse_array(int arr[], int size) {
    int i, temp;
    for (i = 0; i < size/2; ++i) {
        temp = arr[i];
        arr[i] = arr[size-i-1];
        arr[size-i-1] = temp;
    }
}

void print_array(int arr[], int size) {
    int i;
    for (i = 0; i < size; ++i) {
        printf("%d ", arr[i]);
    }
    printf("\n");
}

int main() {
    int arr[] = {4, 9, 1, 5, 8, 2};
    printf("Original array: ");
    print_array(arr, 6);
    reverse_array(arr, 6);
    printf("Reversed array: ");
    print_array(arr, 6);


    int arr1[] = {2, 9, 6, 1, 4};
    printf("\nOriginal array: ");
    print_array(arr1, 5);
    reverse_array(arr1, 5);
    printf("Reversed array: ");
    print_array(arr1, 5);
    return 0;
}