Array iteration with for and foreach in C Sharp (C#) - Mini Project: Build & Apply

Array iteration with for and foreach

📖 Scenario: You are helping a small shop owner who wants to list the prices of items they sell. They have a list of prices and want to see each price printed one by one.

🎯 Goal: Build a simple C# program that stores item prices in an array and then prints each price using both a for loop and a foreach loop.

📋 What You'll Learn

Create an array called prices with the exact values: 10.5, 20.0, 15.75, 30.0

Create an integer variable called length that stores the length of the prices array

Use a for loop with variable i to iterate over prices using length

Use a foreach loop with variable price to iterate over prices

Print each price inside both loops using Console.WriteLine(price)

💡 Why This Matters

🌍 Real World

Iterating over arrays is common when handling lists of data like prices, names, or scores in many programs.

💼 Career

Knowing how to use <code>for</code> and <code>foreach</code> loops to process arrays is a basic skill needed for software development jobs.

1

Create the array of prices

Create an array called prices with these exact values: 10.5, 20.0, 15.75, 30.0.

C Sharp (C#)

# Create the array prices with the given values
// Your code here

Need a hint?

Use double[] prices = {10.5, 20.0, 15.75, 30.0}; to create the array.

2

Create a variable for the array length

Create an integer variable called length that stores the length of the prices array using prices.Length.

C Sharp (C#)

double[] prices = {10.5, 20.0, 15.75, 30.0};
// Create the variable length to store prices.Length
// Your code here

Need a hint?

Use int length = prices.Length; to get the number of items in the array.

3

Use a for loop to print each price

Use a for loop with variable i from 0 to length - 1 to print each price from the prices array using Console.WriteLine(prices[i]).

C Sharp (C#)

double[] prices = {10.5, 20.0, 15.75, 30.0};
int length = prices.Length;
// Use a for loop to print each price
// Your code here

Need a hint?

Use for (int i = 0; i < length; i++) and print prices[i] inside the loop.

4

Use a foreach loop to print each price

Use a foreach loop with variable price to iterate over prices and print each price using Console.WriteLine(price).

C Sharp (C#)

double[] prices = {10.5, 20.0, 15.75, 30.0};
int length = prices.Length;
for (int i = 0; i < length; i++)
{
    Console.WriteLine(prices[i]);
}
// Use a foreach loop to print each price
// Your code here

Need a hint?

Use foreach (double price in prices) and print price inside the loop.