Example: Find Min Max using Pointers in C

// Find Min Max using Pointers
#include <stdio.h>

int main() {
    // Step 1: Declare and initialize an array
    int arr[] = {12, 5, 8, 20, 3, 15, 7};
    int n = sizeof(arr) / sizeof(arr[0]); // Calculate the number of elements

    // Step 2: Declare pointer variables
    int *ptr = arr; // Pointer to the first element
    int *end_ptr = arr + n; // Pointer to one past the last element

    // Step 3: Initialize min_val and max_val with the value at the first element
    int min_val = *ptr;
    int max_val = *ptr;

    // Step 4: Move pointer to the second element for iteration
    ptr++; 

    // Step 5: Iterate through the array using the pointer
    while (ptr < end_ptr) {
        // Step 6: Compare value pointed to by ptr with min_val
        if (*ptr < min_val) {
            min_val = *ptr;
        }
        // Step 7: Compare value pointed to by ptr with max_val
        if (*ptr > max_val) {
            max_val = *ptr;
        }
        // Step 8: Move to the next element
        ptr++;
    }

    // Step 9: Print the results
    printf("Array elements: ");
    for (int i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }
    printf("\n");
    printf("Minimum element: %d\n", min_val);
    printf("Maximum element: %d\n", max_val);

    return 0;
}