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@ -51,22 +51,25 @@ In this example, we use parentheses pass a string as a parameter to *Console.Wri
Variable names can contain alphanumeric characters and underscores, but no special characters. They also cannot be keywords. Variable names can contain alphanumeric characters and underscores, but no special characters. They also cannot be keywords.
## Syntax cheat sheet # Syntax cheat sheet
1. Every statement is ended by a semicolon ## Semicolons
Every statement is ended by a semicolon
```csharp ```csharp
Console.WriteLine("there is a ';' at the end of this statement"); Console.WriteLine("there is a ';' at the end of this statement");
``` ```
1. You can make comments by using 2 slashes ## Comments
You can make comments by using 2 slashes
```csharp ```csharp
// this is a comment is C# // this is a comment is C#
``` ```
1. C# is case sensitive! For example, a variable "cat" is completely different from a variable "CAT". ## Case sensitive
C# is case sensitive! For example, a variable "cat" is completely different from a variable "CAT".
```csharp ```csharp
var cat = "meow"; var cat = "meow";
var CAT = "rawr"; var CAT = "rawr";
``` ```
1. Arithmetic operators ## Arithmetic Operators
These are probably familiar to you! These are probably familiar to you!
| symbol | what it does | | symbol | what it does |
| --- | ------ | | --- | ------ |
@ -78,7 +81,7 @@ In this example, we use parentheses pass a string as a parameter to *Console.Wri
| ++ | increment | | ++ | increment |
| -- | decrement | | -- | decrement |
2. Boolean expressions ## Boolean expressions
We use booleans to compare two or more things. We use booleans to compare two or more things.
| symbol | what it does | | symbol | what it does |
| --- | ------ | | --- | ------ |
@ -91,11 +94,12 @@ In this example, we use parentheses pass a string as a parameter to *Console.Wri
--- ---
# OOP # Object Oriented Programming
C# is an object-oriented language. C# is an object-oriented language.
Objects are defined by **Classes**. In other words, an **Object** is an instance of a class. Objects are defined by **Classes**. In other words, an **Object** is an instance of a class.
One way to think about this is that a class is like the blue prints for a house. The actual house that is built is an objects because it is an instance of this blue print. One way to think about this is that a class is like the blue prints for a house. The actual house that is built is an objects because it is an instance of this blue print.
## Properties and methods
Objects inherently have attributes. In C# we call these **properties**. The attributes of a house may be the number of doors, what color the house is painted, etc. Objects inherently have attributes. In C# we call these **properties**. The attributes of a house may be the number of doors, what color the house is painted, etc.
We can also define **methods** which describe what an object can do. For example, you can sell your house. We can also define **methods** which describe what an object can do. For example, you can sell your house.
@ -117,6 +121,7 @@ public class House
} }
} }
``` ```
## Constructor
We can define a **constructor** to allow us to create new House objects. We can define a **constructor** to allow us to create new House objects.
```csharp ```csharp
@ -140,9 +145,9 @@ Each of these mini challenges is designed so that you can apply C# concepts to m
| # | Challenge | Solution | Duration | What you will learn | More information | | # | Challenge | Solution | Duration | What you will learn | More information |
|-| ------------------------------- | ------------------------------- | ----------- | -------------------------------------- | - | |-| ------------------------------- | ------------------------------- | ----------- | -------------------------------------- | - |
1 | [Hello World](https://docs.microsoft.com/learn/modules/csharp-write-first/2-exercise-hello-world/?ns-enrollment-type=learningpath&ns-enrollment-id=learn.languages.csharp-first-steps)| N/A | 3 min | case sensitive, strings, comments | [Intro to C# Tutorial](https://docs.microsoft.com/dotnet/csharp/tour-of-csharp/tutorials/hello-world?WT.mc_id=csharpnotebook-35129-website), [C# documentation](https://docs.microsoft.com/dotnet/csharp/) | 1 | [Hello World](https://docs.microsoft.com/learn/modules/csharp-write-first/2-exercise-hello-world/?ns-enrollment-type=learningpath&ns-enrollment-id=learn.languages.csharp-first-steps)| N/A | 3 min | case sensitive, strings, comments | [Intro to C# Tutorial](https://docs.microsoft.com/dotnet/csharp/tour-of-csharp/tutorials/hello-world?WT.mc_id=csharpnotebook-35129-website), [C# documentation](https://docs.microsoft.com/dotnet/csharp/) |
2 | [Variables](https://docs.microsoft.com/learn/modules/csharp-literals-variables/6-challenge )|[Solution](https://docs.microsoft.com/learn/modules/csharp-literals-variables/7-solution)| 5 min | variables, data types, strings, ints, decimals | [Numberic Types](https://docs.microsoft.com/dotnet/csharp/tour-of-csharp/tutorials/numbers-in-csharp?WT.mc_id=csharpnotebook-35129-website), [C# documentation](https://docs.microsoft.com/dotnet/csharp/) | 2 | [Variables](https://docs.microsoft.com/learn/modules/csharp-literals-variables/6-challenge )|[Solution](https://docs.microsoft.com/learn/modules/csharp-literals-variables/7-solution)| 5 min | variables, data types, strings, ints, decimals | [String formatting tutorial](https://docs.microsoft.com/learn/modules/csharp-basic-formatting/), [C# documentation](https://docs.microsoft.com/dotnet/csharp/) |
3 | [Operating on Numbers](https://docs.microsoft.com/learn/modules/csharp-basic-operations/5-challenge)|[Solution](https://docs.microsoft.com/learn/modules/csharp-basic-operations/6-solution)| 2 min | ints, decimals | [Link](...) | 3 | [Operating on numbers](https://docs.microsoft.com/learn/modules/csharp-basic-operations/5-challenge)|[Solution](https://docs.microsoft.com/learn/modules/csharp-basic-operations/6-solution)| 2 min | ints, decimals | [Number operations tutorial](https://docs.microsoft.com/learn/modules/csharp-basic-operations/), [C# documentation](https://docs.microsoft.com/dotnet/csharp/) |
4 | [Challenge](...)|[Solution](...)| 5 min | topics | [Link](...) | 4 | [Making clean code](https://docs.microsoft.com/learn/modules/csharp-readable-code/5-challenge)|[Solution](https://docs.microsoft.com/learn/modules/csharp-readable-code/6-solution)| 5 min | topics | [C# coding conventions](https://docs.microsoft.com/dotnet/csharp/fundamentals/coding-style/coding-conventions) | [C# documentation](https://docs.microsoft.com/dotnet/csharp/) |
# Bonus and more ways to connect # Bonus and more ways to connect