51. Find Maximum Element Using Pointer Walk

#include <stdio.h>

int find_max_element(int *ptr, int n) {
   // 1. Initialize max to the very first element to handle negative numbers safely
    int max = *ptr; 
    
    int *arr = ptr + 1;
    // 2. Calculate the exact stopping address
    int *end = ptr + n; 

    // 3. Scan from left to right
    while (arr < end) {
        
        // If the current locker's value is bigger than our recorded max, update it!
        if (*arr > max) {
            max = *arr;
        }
        
        // Move pointer to the next integer in memory
        arr++; 
    }
    
    // Return the largest number found
    return max;
}

int main() {
    int n;
    scanf("%d", &n);

    int arr[100];
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    int result = find_max_element(arr, n);
    printf("%d", result);

    return 0;
}