Why loops are needed in C Sharp (C#) - See It in Action

Why loops are needed

📖 Scenario: Imagine you have a list of 5 friends and you want to say "Hello" to each one. Writing the same greeting again and again is tiring and takes a lot of space. Loops help us repeat actions easily without writing the same code many times.

🎯 Goal: You will create a list of friend names, set up a counter, use a loop to greet each friend, and finally print all greetings.

📋 What You'll Learn

Create a string array called friends with these exact names: "Anna", "Ben", "Cara", "David", "Eva"

Create an integer variable called count and set it to 0

Use a while loop with the condition count < friends.Length to print greetings

Inside the loop, print "Hello, {friends[count]}!" using Console.WriteLine

Increase count by 1 inside the loop

💡 Why This Matters

🌍 Real World

Loops are used in many programs to repeat tasks like processing lists of data, showing menus, or handling user input multiple times.

💼 Career

Understanding loops is essential for any programming job because they help automate repetitive tasks efficiently.

1

Create the list of friends

Create a string array called friends with these exact names: "Anna", "Ben", "Cara", "David", "Eva"

C Sharp (C#)

// Create the string array friends with the given names
// Your code here

Need a hint?

Use string[] friends = { "Anna", "Ben", "Cara", "David", "Eva" }; to create the array.

2

Create a counter variable

Create an integer variable called count and set it to 0

C Sharp (C#)

string[] friends = { "Anna", "Ben", "Cara", "David", "Eva" };
// Create an integer variable count and set it to 0
// Your code here

Need a hint?

Use int count = 0; to create the counter.

3

Use a while loop to greet friends

Use a while loop with the condition count < friends.Length to print greetings. Inside the loop, print "Hello, {friends[count]}!" using Console.WriteLine. Increase count by 1 inside the loop.

C Sharp (C#)

string[] friends = { "Anna", "Ben", "Cara", "David", "Eva" };
int count = 0;
// Use a while loop to greet each friend
// Your code here

Need a hint?

Use while (count < friends.Length) and inside the loop print the greeting and increase count by 1.

4

Run the program to see greetings

Run the program to print all greetings. Use Console.WriteLine inside the loop as before. The output should show greetings for all friends.

C Sharp (C#)

string[] friends = { "Anna", "Ben", "Cara", "David", "Eva" };
int count = 0;
while (count < friends.Length)
{
    Console.WriteLine($"Hello, {friends[count]}!");
    count++;
}
// Run the program to see the greetings

Need a hint?

Make sure your loop prints each greeting on its own line.