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Displaying a Triangle with User Name in C#

In this exercise, the program will ask the user for their name and display a triangle pattern with the name. The triangle will start with the first letter of the name and will gradually grow until it displays the entire name in each line. The purpose of this exercise is to demonstrate how to manipulate strings and use loops in C# to produce a specific output based on user input.



Group

C# Arrays, Structures and Strings

Objective

1. Ask the user to input their name.
2. Use a loop to display each part of the name starting from the first letter, and increase the length of the part displayed until the whole name is shown.
3. Ensure that the program correctly handles any input length and displays the name in a growing triangle pattern.
4. Print each part of the name in a new line.

Write a C# program to ask the user for his/her name and display a triangle with it, starting with 1 letter and growing until it has the full length:

Enter your name: Juan
J
Ju
Jua
Juan

Example C# Exercise

 Copy C# Code 
using System;

class Program
{
    static void Main()
    {
        // Ask the user for their name
        Console.Write("Enter your name: ");
        string name = Console.ReadLine();

        // Loop through the string to print a growing triangle
        for (int i = 1; i <= name.Length; i++)
        {
            // Print the first i characters of the name
            Console.WriteLine(name.Substring(0, i));
        }
    }
}

 Output

Enter your name: Juan
J
Ju
Jua
Juan

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More C# Practice Exercises of C# Arrays, Structures and Strings

Explore our set of C# Practice Exercises! Specifically designed for beginners, these exercises will help you develop a solid understanding of the basics of C#. From variables and data types to control structures and simple functions, each exercise is crafted to challenge you incrementally as you build confidence in coding in C#.