4.18 - Strings manipulation


Create a program that asks the user for a string and:

- Replace all lowercase A by uppercase A, except if they are preceded with a space
- Display the initials (first letter and those after a space)
- Display odd letters uppercase and even letter lowercase

The program must display all generated strings.


using System;
class Program
    static void Main(string[] args)
        Console.Write("Tell a string: ");
        string Entry = Console.ReadLine();
        string result;
        result = Entry.Replace("a", "A");
    public static string UppercaseFirst(string s)
        return char.ToUpper(s[0]) + s.Substring(1);

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