C# Programs Examples

/*Here some examples to start programming in C#*/

using System;

namespace Consoles

{

    class Program

    {

        public void arrays()

        {

            int[,] a = new int[3, 3];

            int[,] b = new int[3, 3];

            int[,] sum = new int[3, 3];

            int i, j;

            Console.WriteLine(" Enter elements of 1st matrix ");

            for (i = 0; i < 3; ++i)

                for (j = 0; j < 3; ++j)

                    a[i, j] = int.Parse(Console.ReadLine());

            Console.WriteLine(" Enter elements of 1st matrix ");

            for (i = 0; i < 3; ++i)

                for (j = 0; j < 3; ++j)

                    b[i, j] = int.Parse(Console.ReadLine());

            // adding two matrices

            for (i = 0; i < 3; ++i)

                for (j = 0; j < 3; ++j)

                    sum[i, j] = a[i, j] + b[i, j];

            //Printing the Result

            Console.WriteLine("The sum of two matrix are :");

            for (i = 0; i < 3; ++i)

                for (j = 0; j < 3; ++j)

                {

                    Console.Write(" " + sum[i, j]);

                    if (j == 3 - 1)

                        Console.Write("\n");

                }

        }

        public void strings()

        {

            //Declaring a variable using strings...

            string friend = "Rahul";

            Console.WriteLine(friend);

            //using declared variable in printing statement...

            Console.WriteLine($"Hello {friend}");

            //now declaring 2 variables and using them in one statements

            string friend1 = "Rakesh";

            string friend2 = "Shivam";

            //Syntax of using a variable value in the console.writeline....

            Console.WriteLine($"My friends are {friend1} and {friend2}");

            //Now to check the length of a string value stored....

            Console.WriteLine($"The length of {friend1} is {friend1.Length}");

            Console.WriteLine($"The length of {friend2} is {friend2.Length}");

            Console.WriteLine("Hello World!");

        }

        static void Main(string[] args)

        {

            Program a = new Program();

            Console.WriteLine(" Collection of Programs : \n Choose any one to run :");

            Console.WriteLine(" 1. Strings \n 2. Arrays  \n");

            int b = int.Parse(Console.ReadLine());

            switch (b)

            {

                case 1:

                    a.strings(); break;

                case 2:

                    a.arrays(); break;

                default:

                    Console.WriteLine("Wrong option"); break;

            }

        }

    }

}

Try this program in your console and , to run program just click green button in Visual Studio Menubar, like here as shown





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