C#: Find the uppercase words in a string

Last update on December 20 2024 12:42:13 (UTC/GMT +8 hours)

Write a program in C# Sharp to find uppercase words in a string.

Sample Solution:

C# Sharp Code:

using System;
using System.Linq;
using System.Collections.Generic;

// Define a class named LinqExercise12
class LinqExercise12
{
    // Main method, the entry point of the program
    static void Main(string[] args)
    {
        // Display information about the program
        Console.Write("\nLINQ : Find the uppercase words in a string : ");
        Console.Write("\n----------------------------------------------\n");

        string strNew; // Declare a string variable named strNew

        // Ask the user to input a string
        Console.Write("Input the string : ");
        strNew = Console.ReadLine();

        // Call the WordFilt method to filter uppercase words in the input string
        var ucWord = WordFilt(strNew);

        // Display the uppercase words found in the input string
        Console.Write("\nThe UPPER CASE words are :\n ");
        foreach (string strRet in ucWord)
        {
            Console.WriteLine(strRet);
        }
        Console.ReadLine(); // Wait for user input before closing the program
    }

    // Define a method named WordFilt that takes a string parameter and returns IEnumerable<string>
    static IEnumerable<string> WordFilt(string mystr)
    {
        // Split the input string into words, filter and retrieve uppercase words
        var upWord = mystr.Split(' ')
                    .Where(x => String.Equals(x, x.ToUpper(),
                    StringComparison.Ordinal));

        return upWord; // Return the uppercase words
    }
}

Sample Output:

LINQ : Find the uppercase words in a string :                       
----------------------------------------------                      
Input the string : this IS a STRING                                 
                                                                    
The UPPER CASE words are :                                          
 IS                                                                 
STRING

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