8.08 - Count letters in file


Create a program to count the amount of times that a certain character is inside a file (of any kind).

The file and the letter can be asked to the user or passed as parameters:

count example.txt a

It must display in screen the amount of letters found.

(you can choose any way to interact with the user, showing the proper help)


using System;
using System.IO;
namespace ConsoleApplication1
    class CountLetters
        static void Main()
            bool debug = true;

            Console.Write("Name of file: ");
            string nameFile = Console.ReadLine();
            Console.Write("Letter for count: ");
            string letter = Console.ReadLine();

            StreamReader myfile;
            myfile = File.OpenText( nameFile );
            string line;
            int countLetter =0;
                line = myfile.ReadLine();
                if (line != null)
                    for (int i=0; i < line.Length; i++)
                        if (line.Substring(i,1) == letter)
            while (line != null);
            Console.WriteLine("Amount of letter: {0}",countLetter);
            if (debug)

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