Character

The keyword char represents a single character. A character value is always enclosed in single quotes (').

main


              12345678910111213141516
            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
          char letter1 = 'a';
		  char letter2 = 'b';

		  Console.WriteLine(letter1); // Output: a
		  Console.WriteLine(letter2); // Output: b
        }
    }
}

Every character represents an integer value in the ASCII table. The ASCII table is a fundamental character encoding system used in computers to represent text and symbols. Each character, like letters, numbers, and punctuation marks, is assigned a unique numerical value that computers understand. This allows computers to exchange and display information in a standardized way.

For example, the character a represents the value 97 while b represents 98. You can view the ASCII table at: ASCII table link We can perform arithmetic operations on the characters. The operations always return an integer value based on the ASCII values of the characters being operated. For-example:

main


              123456789101112131415
            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
          char var1 = 'a';
		  char var2 = 'b';

		  Console.WriteLine(var1 + var2); // Output: 195
        }
    }
}

The above code outputs 195 because the sum of the ASCII values of a and b is 195.

The digits from 0 to 9 can also be represented as characters by enclosing them in single quotes:

However, digits represented as characters are NOT the same as integers.

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Seção 2. Capítulo 5