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Functions in C#

C# has a number of builtin functions. This lesson includes some of the most commonly used functions.

Please study the material at each of the links below.

1. Microsoft Reference: C# Math Functions
   
   

2. Math Functions: C# has a number of built-in functions and constants that you can use.
   
   
3. Demonstration of Math Functions: Shows how math functions might be used
   /csharp/videos/csharp-math-functions.mp4
   
4. Drill on Math Functions Ceiling, Floor, and Round: Check your understanding of these functions
   
   
5. ToString function instead of + to concatenate: Compares using + and ToString()
   /csharp/videos/csharp-tostring.mp4
   
6. Parse: Convert text to Double: A user does not always type a numeric value in text box,
   parse to get numeric value
   /csharp/videos/csharp-parse.mp4
   
7. TryParse: Convert text to Double if Numeric: TryParse to handle numeric error
   /csharp/videos/csharp-tryparse.mp4
   
8. Ceiling: How many busses?: Real world problem to solve
   
   
9. Random Numbers: Code to declare and use a random number
   
   
10. Circle: Write a function to find area: A function receives the radius and returns the area
    /csharp/videos/csharp-circle.mp4
    
11. A Function to Generate Random Colors: A function to return a random color using Color.FromArgb(red, green, blue);
    /csharp/videos/csharp-randomcolor.mp4
    
12. BMI: A Void Function to calculate Body Mass Index: A void function does not return a value
    /csharp/videos/csharp-BMI.mp4
    

Glossary for functions lesson
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