Example: Array Sum using Pointers in C

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// Array Sum using Pointers
#include <stdio.h>

int main() {
    int arr[] = {10, 20, 30, 40, 50};
    int n = sizeof(arr) / sizeof(arr[0]);
    int sum = 0;

    // Step 1: Declare a pointer and initialize it to the start of the array
    int *ptr = arr; // ptr now points to arr[0]

    // Step 2: Loop while the pointer is within the array bounds
    // We iterate 'n' times, incrementing the pointer each time
    for (int i = 0; i < n; i++) {
        sum += *ptr; // Add the value pointed to by ptr to sum
        ptr++;       // Move pointer to the next element
    }

    printf("The sum of array elements using pointers is: %d\n", sum);

    return 0;
}