C# (pronounced C Sharp) is a computer language developed by Microsoft but made available to the general public through international standards. The current release is termed as 3.0.

This series of lessons teach C# (3.0) as a computer language, not to be confused with Microsoft Visual C# or any other programming environment that uses C#.

Here is an example of an interface, including a class that implements it, and creating an object from it.

The greatest common divisor of two positive integers is the highest number that can divide those two other numbers. This example shows how to find the greatest common divisor of two numbers.

The rational is a number that is represented by two parts, a numerator and a denominator. Here is an example of producing a rational.

This example shows how you can increase the number of items in an array if you have to add values beyond the original size.

This is an example of a linked list, which is a technique of creating a collection of items where an item can be located based on another existing item.

Here is a class used as an introduction to collections. It creates a class that implements the IList interface. It also adds some other features to the class.

An array-based list is a collection of items where each item can be located using its index.

This application shows how to assist the cashier of a store figure out how much change to give to a customer.

This series of sample programs shows how to find the highest number in a series.

This is an example code of finding out whether a word or sentence is a palindrome, which is a word or a sentence that reads the same way from left to right or from right to left.