This document summarizes programming concepts covered in week 1, including variables, value types vs reference types, and static vs non-static classes. It defines variables as boxes that store data, and provides an example of an integer variable named 'age' assigned the value 5. Reference types are described as storing more complex objects with multiple fields, using a 'Human' class as an example. The document also distinguishes static classes that can be used without instantiation from non-static classes that require using 'new' to create an object instance. It recommends using console programs for basic problem solving and lists some fundamental C# language concepts and functions to use.

1. Software Programming and FundamentalsRecap what we covered in week #1

2. VariableVariable: imagine like a box to store one thing (data)Eg: int age; age = 5;

3. VariableVariable: imagine like a box to store one thing (data)Eg: int age; age = 5;int - Size of variable must be big enough to store Integer

4. VariableVariable: imagine like a box to store one thing (data)Eg: int age; age = 5;int - Size of variable must be big enough to store Integerage - Name of variableage

5. VariableVariable: imagine like a box to store one thing (data)Eg: int age; age = 5;5int - Size of variable must be big enough to store Integerage - Name of variableageage = 5 – Put a data 5 into the variable

6. Value Type Vs Reference TypeVariables: two typesValue type (simple type like what you just saw)Only need to store one thing (5, 3.5, true/false, ‘C’ and “string”)Reference type (complex type for objects)Need to store more than one thing (age + height + run() + … )

7. Reference TypeReference type (complex type for objects)Eg: Human john; john = new Human();Compare this to int age;age = 5;

8. Reference TypeReference type (complex type for objects)Eg: Human john; john = new Human();Human - Size of variable must be big enough to store an Address

9. johnReference TypeReference type (complex type for objects)Eg: Human john; john = new Human();Human - Size of variable must be big enough to store an Addressjohn - Name of variable

10. Reference TypeReference type (complex type for objects)Eg: Human john; john = new Human();D403age…Human - Size of variable must be big enough to store an Addressheightjohn - Name of variablejohnjohn = new Human() – Get a house with enough space for john (age, height, etc)

11. Non-Static Vs Static ClassNon-Static: need New() to instantiate / create an object – like what you see just nowStatic: no need to use New() to use, there is just one copy of the class. This type of class basically to provide special functions for other objects So if you see a class being used without New(): it is a static classEgMath class age = Math.Round(18.5); // Math rounding

12. Using Console Program for problem solvingConsole program:SimpleProcedural (from top to bottom)Getting inputs: From arguments: How? From keyboard: How?Exercise 2.1 – 2.5Language fundamental: int, double, string, Console.WriteLine(), Console.Write(), Console.ReadLine(), int.Parse(), double.Parse(), simple if then statementProblem solving: repeating, swopping of 2 variables, simple sorting