Finding Largest and Smallest Elements Using Pointers

Summary: This program takes an array of integers, traverses it using pointers, and finds the largest and smallest elements.

#include <stdio.h>

void findMinMax(int *arr, int size, int *min, int *max) {
    *min = *arr;
    *max = *arr;

    for (int i = 1; i < size; i++) {
        if (*(arr + i) < *min) {
            *min = *(arr + i);
        }
        if (*(arr + i) > *max) {
            *max = *(arr + i);
        }
    }
}

int main() {
    int n, min, max;

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

    int arr[n];
    printf("Enter %d integers: ", n);
    for (int i = 0; i < n; i++) {
        scanf("%d", arr + i);
    }

    findMinMax(arr, n, &min, &max);

    printf("\nLargest element: %d\n", max);
    printf("Smallest element: %d\n", min);

    return 0;
}

Explanation:

Pointer Initialization:
The function findMinMax() initializes *min and *max to the first element of the array.

Pointer Arithmetic:
The array is traversed using pointer arithmetic, comparing each element to update the min/max values.

Function Usage:
The function is called with the array, size, and addresses of min and max to update the values dynamically.

Array Input and Output:
The array elements are entered by the user, and the largest and smallest elements are printed after finding them.