C#: Check if a given string contains 'w' character between 1 and 3 times

Last update on June 23 2025 12:59:32 (UTC/GMT +8 hours)

Check 'w' Appears 1-3 Times

Write a C# program to check if a given string contains the 'w' character between 1 and 3 times.

Pictorial Presentation:

C# Sharp Exercises: Check if a given string contains 'w' character between 1 and 3 times

Sample Solution:

C# Sharp Code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

public class Exercise41
{
    public static void Main( )
    {
        // Prompt the user to input a string containing at least one 'w' character
        Console.Write("Input a string (contains at least one 'w' char) : ");

        // Read the input string and store it in the variable 'str'
        string str = Console.ReadLine();

        // Count the occurrences of the character 'w' in the input string and store the count in 'count'
        var count = str.Count(s => s == 'w');

        // Display a message indicating the test for the presence of 'w' character between 1 and 3 times
        Console.WriteLine("Test the string contains 'w' character between 1 and 3 times: ");

        // Check if the count of 'w' characters is between 1 and 3 (inclusive) and print the result
        Console.WriteLine(count >= 1 && count <= 3);   
    }
}

Sample Output:

Input a string (contains at least one 'w' char) : w3resource           
Test the string contains 'w' character  between 1 and 3 times:         
True

Flowchart:

For more Practice: Solve these Related Problems:

Write a C# program to count how many times 'w' appears in a string and return true if it's 1 to 3 times.
Write a C# program to validate a string contains only one to three instances of any vowel.
Write a C# program to return true if a string contains exactly 2 'w' characters.
Write a C# program to find if a character appears between m and n times in a string.

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