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C# Program to swap two numbers without using temporary variable

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Problem

Write a program in Visual CSharp to swap two numbers using temporary variable and display the result in the console window.

How to swap two numbers in C# without using temporary variable ?

using System;

namespace AbundantcodeApp
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Abundantcode.com coding sample");
            int number1, number2;
            Console.WriteLine("Enter the First Number : ");
            number1 = int.Parse(Console.ReadLine());
            Console.WriteLine("Enter the Second Number : ");
            number2 = int.Parse(Console.ReadLine());
            number1 = number1 - number2;
            number2 = number1 + number2;
            number1 = number2 - number1;
            Console.WriteLine("First Number is " + number1);
            Console.WriteLine("Second Number is " + number2);
            Console.Read();
        }
    }
}

Output

Abundantcode.com coding sample

Enter the First Number :

45

Enter the Second Number :

67

First Number is 67

Second Number is 45

C# Program to swap two numbers

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Problem

Write a program in C# to swap two numbers using temporary variable and display the result in the console window.

How to swap two numbers in C# and display it in the Console ?

using System;

namespace AbundantcodeApp
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Abundantcode.com coding sample");
            int number1, number2, temp;
            Console.WriteLine("Enter the First Number : ");
            number1 = int.Parse(Console.ReadLine());
            Console.WriteLine("Enter the Second Number : ");
            number2 = int.Parse(Console.ReadLine());
            temp = number1;
            number1 = number2;
            number2 = temp;
            Console.WriteLine("First Number is " + number1);
            Console.WriteLine("Second Number is " + number2);
            Console.Read();
        }
    }
}

Output

Abundantcode.com coding sample

Enter the First Number :

25

Enter the Second Number :

87

First Number is 87

Second Number is 25

C# Program to print the sum of two numbers

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Problem

Write a program in C# to add two numbers and display the result in copnsole window.

How to print the sum of two numbers in C# ?

using System;

namespace AbundantcodeApp
{
    class Program
    {
        static void Main(string[] args)
        {
            int input1 = 10;
            int input2 = 25;
            int result = input1 + input2;
            Console.WriteLine("Abundantcode.com coding sample");
            Console.WriteLine(result);
            Console.ReadLine();
        }
    }
}

Output

Abundantcode.com coding sample

35

C# Program to find the ASCII Value of a Character

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Problem

Write a program in Visual C# to find the ASCII value of the input character.

How to find the ASCII value of a character in C# ?

using System;

namespace AbundantcodeApp
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Abundantcode.com coding sample");
            Console.Write("Enter a character : ");
            char input = char.Parse(Console.ReadLine());
            // casting to convert the integer representation of the character
            int asciiValue = (int)input;
            Console.WriteLine(asciiValue);
            Console.ReadLine();
        }
    }
}

Output

Abundantcode.com coding sample

Enter a character : A

65