Day 11: The Loop Connection | Traversing Arrays

📅 Date: Jan 11, 2026
🔥 Topic: Array Input & Traversal (Loops)

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🔄 Loops + Arrays = ❤️

Since array indexes follow a sequence (0, 1, 2...), we can use a For Loop to visit every element. This is called "Traversing".

💻 Day 11 Code: Taking User Input

Here is a program that asks the user for 5 numbers and then prints them back.

#include <iostream>
using namespace std;

int main() {
    int n = 5;
    int arr[n];

    // Input Loop
    cout << "Enter 5 numbers:" << endl;
    for(int i = 0; i < n; i++) {
        cin >> arr[i];
    }

    // Output Loop
    cout << "You entered: ";
    for(int i = 0; i < n; i++) {
        cout << arr[i] << " ";
    }
    cout << endl;

    return 0;
}

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💭 Thoughts

The variable i in the loop acts perfectly as the index for the array. This is the foundation for almost every array algorithm I will learn next.