Console.ReadLine for input in C Sharp (C#) - Mini Project: Build & Apply

Using Console.ReadLine to Get User Input

📖 Scenario: You are creating a simple program that asks a user for their name and age. Then, it will greet the user and tell them their age next year.

🎯 Goal: Build a program that reads user input from the console using Console.ReadLine(), converts the age to a number, and prints a greeting message with the age next year.

📋 What You'll Learn

Use Console.ReadLine() to get user input

Store the user name in a variable called userName

Store the user age in a variable called userAge

Convert the age input from string to integer

Print a greeting message with the user name and age next year

💡 Why This Matters

🌍 Real World

Getting user input from the console is common in simple command-line tools and learning programs.

💼 Career

Understanding how to read input and convert data types is essential for building interactive applications and processing user data.

1

Create variables for user name and age input

Create two string variables called userName and userAge and set both to empty strings.

C Sharp (C#)

string userName = "";
string userAge = "";
// Your code here

Need a hint?

Use string type and set variables to empty quotes "".

2

Read user input using Console.ReadLine()

Use Console.ReadLine() to read the user name into userName and the user age into userAge.

C Sharp (C#)

string userName = "";
string userAge = "";
userName = Console.ReadLine();
userAge = Console.ReadLine();
// Your code here

Need a hint?

Assign Console.ReadLine() to each variable to get input from the user.

3

Convert age input to integer

Create an integer variable called age and convert userAge to an integer using int.Parse(userAge).

C Sharp (C#)

string userName = "";
string userAge = "";
userName = Console.ReadLine();
userAge = Console.ReadLine();
int age = int.Parse(userAge);
// Your code here

Need a hint?

Use int.Parse() to convert the string to an integer.

4

Print greeting with age next year

Print a message using Console.WriteLine that says: "Hello, {userName}! Next year, you will be {age + 1} years old." Use string interpolation with $"...".

C Sharp (C#)

string userName = "";
string userAge = "";
userName = Console.ReadLine();
userAge = Console.ReadLine();
int age = int.Parse(userAge);
Console.WriteLine($"Hello, {userName}! Next year, you will be {age + 1} years old.");
// Your code here

Need a hint?

Use Console.WriteLine with $"..." to insert variables inside the string.