C#: Create a new string taking 3 characters from the middle of a given string at least 3

Last update on June 27 2025 13:06:24 (UTC/GMT +8 hours)

Three Characters from Middle of String

Write a C# Sharp program to create a string by taking at least 3 characters from the middle of a given string.

Visual Presentation:

Sample Solution:-

C# Sharp Code:

using System; // Importing the System namespace

namespace exercises // Define a namespace called 'exercises'
{
    class Program // Define a class named 'Program'
    {
        static void Main(string[] args) // The entry point of the program
        {
            // Output the result of the test function with different strings as arguments
            Console.WriteLine(test("Hello"));   // Pass "Hello" as an argument to the test function
            Console.WriteLine(test("Python"));  // Pass "Python" as an argument to the test function
            Console.WriteLine(test("abc"));     // Pass "abc" as an argument to the test function
            Console.ReadLine(); // Wait for user input before closing the console window
        }

        // Function definition of the test function that takes a string 's1' and returns a string
        public static string test(string s1)
        {
            // Calculate the starting index to get a substring of length 3 from the middle of the string 's1'
            // The formula (s1.Length - 1) / 2 - 1 calculates the starting index of the desired substring
            return s1.Substring((s1.Length - 1) / 2 - 1, 3);
        }
    }
}

Sample Output:

ell
yth
abc

Flowchart:

PREV : Two Characters Starting at Index.
NEXT : First Two Characters with Missing '#' if Short.

C# Sharp Code Editor:

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