using System;

​

public class Program

    {

    public static void Main()

    {

        Console.WriteLine("Enter the first string (s) ");

        string firstString = Console.ReadLine();

        Console.WriteLine("Enter the second string (t) ");

        string secondString = Console.ReadLine();

        int var = 0;

        for (int i = 0; i < secondString.Length; i++)

        {           

            if (var < firstString.Length)

            {

                if (secondString[i] == firstString[var])

                {

                    var++;

                }

            }

            else

            {

                break;

            }

        }

        if (var == firstString.Length)

        {

            Console.WriteLine("true");

        }

        else

        {

        Console.WriteLine("false");

        }

    }

}

​

​

​

​

​

​