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C# Basics

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Course Summary

1:21 with Jay McGavren

Congratulations! You've finished the course! You have a complete, working C# program. Let's do a quick review of everything we've learned.

Installing C#

Congratulations! You've finished the course! You have a complete, working C# program. Let's do a quick review of everything we've learned.

You've learned how to define and call methods. You learned how to set a method up to take parameters, and provide arguments when calling the method. And you learned about method return values and how to use them.

    static double Add(double first, double second)
    {
        return first + second;
    }

    static void Main(string[] args)
    {
        double sum = Add(5, 3);
        Console.WriteLine(sum);
    }

You learned about joining strings with concatenation, inserting values into strings with interpolation, and inserting special characters with escape sequences.

Console.WriteLine("a" + "b");
Console.WriteLine($"aaa {DateTime.Now} bbb");
Console.WriteLine("first line\nsecond line");

You learned about the important distinctions between C#'s numeric types, and how to do math operations.

int myInteger = (int)12.75;
Console.WriteLine(myInteger.GetType());
Console.WriteLine((1 + 2) * 3);

And, you learned about comparison operators, and how to use them in if statements.

    static double Price(int quantity)
    {
        double pricePerUnit;
        if (quantity >= 100)
        {
            pricePerUnit = 1.5;
        }
        else if (quantity >= 50)
        {
            pricePerUnit = 1.75;
        }
        else
        {
            pricePerUnit = 2;
        }
        return quantity * pricePerUnit;
    }

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    Congratulations, you've finished the course. 0:00
    You have a complete working C# program. 0:02
    Let's do a quick review of everything we've learned. 0:06
    You've learned how to define and call methods. 0:09
    You learned how to set a method up to take parameters and 0:11
    provide arguments when calling the method. 0:14
    And you learned about method return values and how to use those. 0:16
    You learned about joining strings with concatenation. 0:21
    Inserting values into strings within interpolation and 0:24
    inserting special characters with escape sequences. 0:27
    You learned about the important distinctions between C#'s numeric types 0:31
    and how to do math operations. 0:35
    And you learned about comparison operators and how to use them in if statements. 0:37
    You'll find variables, methods, strings, math operations, and 0:42
    if statements in almost any programming language you learn in the future. 0:46
    Some of the details vary, but the basic concepts and 0:51
    even most of the syntax will be the same. 0:54
    You've mastered some important concepts that you'll be using for 0:56
    the rest of your development career. 0:59
    You've learned a lot, but it's important not to stop now. 1:01
    Practice is the key to making the knowledge stick. 1:04
    Be sure to check the teacher's notes for project ideas and further reading. 1:07
    If you want to try installing C# on your own computer, 1:12
    we'll have info about that too. 1:15
    Thanks for watching and we'll see you in the next course. 1:17

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