C++ Pointers and Arrays

🔗 C++ Pointers and Arrays – One Name, Many Values

In C++, arrays and pointers are best buddies. An array name acts like a pointer to its first element! 🧠

This makes it easy to access or loop through arrays using pointer logic.

📘 Quick Facts

• arr is a pointer to the first element
• *(arr + i) is the same as arr[i]
• Pointer arithmetic helps move through the array

🔧 Example: Access Array Elements Using Pointer

#include <iostream>
using namespace std;

int main() {
    int numbers[5] = {10, 20, 30, 40, 50};
    int* ptr = numbers; // Points to first element

    for (int i = 0; i < 5; i++) {
        cout << "Element " << i << ": " << *(ptr + i) << endl;
    }

    return 0;
}
  

🔁 Example: Use Pointer as Loop Variable

Let’s walk through the array using a pointer directly.

#include <iostream>
using namespace std;

int main() {
    int data[] = {1, 2, 3, 4};
    int* p = data;

    while (p < data + 4) {
        cout << *p << " ";
        p++;
    }

    return 0;
}
  

💡 Summary

• Array name is a pointer to the first element
• arr[i] = *(arr + i)
• Pointers make array navigation flexible

Now you can loop, access, and play with arrays like a pointer pro! 🧩