1.Intro-Programming-Homework solutions

/* Problem 1.   Play with Visual Studio
 * Familiarize yourself with Microsoft Visual Studio (if you already have it installed) or install Visual Studio
 * (or Visual Studio Express) at your laptop or home computer. Search in Internet for the correct download
 * link: http://google.com/search?q=download+visual+studio.
 * Start Visual Studio and play with it. Create a simple C# program (console application), compile and run it.
 */
using System;

public class PrintWindows
{
    public static void Main()
    {
        Console.WriteLine("Windows");
    }
}

/* Problem 4.   Hello World
 * Create, compile and run a “Hello C#” console application. Ensure you have named the application well (e.g. “”HelloCSharp”).
 */
using System;

public class HelloCSharp
{
    public static void Main()
    {
        Console.WriteLine("HelloCSharp");
    }
}

/* Problem 5.   Print Your Name
 * Modify the previous application to print your name. Ensure you have named the application well (e.g. “PrintMyName”).
 */
using System;

public class PrintMyName
{
    public static void Main()
    {
        Console.WriteLine("Pesho");
    }
}

/* Problem 6.   Print Numbers
 * Write a program to print the numbers 1, 101 and 1001, each at a separate line.
 */
using System;

public class PrintNumbers
{
    public static void Main()
    {
        Console.WriteLine(1);
        Console.WriteLine(101);
        Console.WriteLine(1001);
    }
}

/* Problem 7.   Print First and Last Name
 * Create console application that prints your first and last name, each at a separate line.
 */
using System;

public class PrintMyName
{
    public static void Main()
    {
        Console.WriteLine("Petar");
        Console.WriteLine("Tseperski");
    }
}

/* Problem 8.   Square Root
 * Create a console application that calculates and prints the square root of the number 12345.
 * Find in Internet “how to calculate square root in C#”.
 */
using System;

public class CalcSqureRoot
{
    public static void Main()
    {
        Console.WriteLine(Math.Sqrt(12345));
    }
}

/* Problem 9.   Print a Sequence
 * Write a program that prints the first 10 members of the sequence: 2, -3, 4, -5, 6, -7, ...
 */
using System;

public class PrintSequence
{
    public static void Main()
    {
        for (int i = 2; i < 12; i++)
        {
            if (i % 2 == 0)
            {
                Console.Write(i);
            }
            else
            {
                Console.Write(-i);
            }

            if (i != 11)
            {
                Console.Write(", ");
            }
        }

        Console.WriteLine();
    }
}

/* Problem 10.  Reformat C# Code
 * Reformat the following C# code to make it readable according to the C# best practices for code formatting.
 * Change the casing of the identifiers in the code (e.g. use PascalCase for the class name):

using

System;

class hoRRiblEcoDe
{
    static
     void

        Main()
    {
        Console.

    WriteLine("Hi, I am horribly formatted program"
); Console.
      WriteLine("Numbers and squares:")
; for (int i = 0;
i < 10;
i++)
        {
            Console.WriteLine(i +
                " --> " + i
                *
                i);
        }
    }
}

 */
using System;

public class HorribleCode
{
    public static void Main()
    {
        Console.WriteLine("Hi, I am horribly formatted program");
        Console.WriteLine("Numbers and squares:");

        for (int i = 0; i < 10; i++)
        {
            Console.WriteLine(i + " --> " + i * i);
        }
    }
}

/* Problem 14.  * Current Date and Time
 * Create a console application that prints the current date and time. Find in Internet how.
 */
using System;

public class PrintCurrentDateTime
{
    public static void Main()
    {
        Console.WriteLine(DateTime.Now);
    }
}

/*
 * Problem 15.  * Age after 10 Years
 * * Write a program to read your age from the console and print how old you will be after 10 years.
 */
using System;

public class PrintFutureAge
{
    public static void Main()
    {
        Console.Write("Input your age: ");
        string input = Console.ReadLine();
        int age = int.Parse(input);
        int result = age + 10;
        Console.WriteLine("Your age after 10 years will be: {0}", result);
    }
}

/* Problem 16.  * Print Long Sequence
 * Write a program that prints the first 1000 members of the sequence: 2, -3, 4, -5, 6, -7, …
 * You might need to learn how to use loops (search in Internet).
 */
using System;

public class PrintLongSequence
{
    public static void Main()
    {
        for (int i = 2; i < 1002; i++)
        {
            if (i % 2 == 0)
            {
                Console.Write(i);
            }
            else
            {
                Console.Write(-i);
            }

            if (i != 1001)
            {
                Console.Write(", ");
            }
        }

        Console.WriteLine();
    }
}

/* Problem 17.  * Play with the Debugger in Visual Studio
 * Write a program that prints at the console the numbers from 1 to 1000, each at a separate line.
 * You might need to learn how to use loops (search in Internet). Set a breakpoint in the line, which prints the next number
 * in the Visual Studio code editor. Run the program through the debugger using the [F5] key. When the debugger stops at the
 * breakpoint trace the code execution with [F10] key.
 */
using System;

public class PrintLongSequenceForDebugging
{
    public static void Main()
    {
        for (int i = 1; i < 1001; i++)
        {
            Console.WriteLine(i);
        }
    }
}