C#•14mo ago

Is anyone good with statice modifier?

I need help with my class work about statice modifiers as I'm nearly lost in what I need to do.

// TODO: Define a simple class called MyMath with the following static methods:
// * Add - adds two integers together and returns the result.
// * Subtract - subtracts integer b from integer a and returns the result.
// * Multiply - Multiplies two integers and returns the result.
// * Divide - divides two integers and returns the result.

// TODO: In MyMath, add the following static variable:
// * sumTotal - the sum of every time the Add method is called.


public class StaticPractice : MonoBehaviour
{
    void Start()
    {
        // uncomment the following code to test your class.
        /*
        print(MyMath.Add(10,15));
        print(MyMath.Add(13,22));
        print(MyMath.Add(56,83));
        print(MyMath.sumTotal);

        print(MyMath.Subtract(10,5));

        print(MyMath.Multiply(4,8));

        print(MyMath.Divide(10,2));
        */
    }
}

// TODO: Define a simple class called MyMath with the following static methods:
// * Add - adds two integers together and returns the result.
// * Subtract - subtracts integer b from integer a and returns the result.
// * Multiply - Multiplies two integers and returns the result.
// * Divide - divides two integers and returns the result.

// TODO: In MyMath, add the following static variable:
// * sumTotal - the sum of every time the Add method is called.


public class StaticPractice : MonoBehaviour
{
    void Start()
    {
        // uncomment the following code to test your class.
        /*
        print(MyMath.Add(10,15));
        print(MyMath.Add(13,22));
        print(MyMath.Add(56,83));
        print(MyMath.sumTotal);

        print(MyMath.Subtract(10,5));

        print(MyMath.Multiply(4,8));

        print(MyMath.Divide(10,2));
        */
    }
}

37 Replies

ZacharyPatten•14mo ago

that assignment looks extremely straightforward to me what are you stuck on?

MRW419OP•14mo ago

Well on how it works and what statics do It just doesn't make full sense to me

ZacharyPatten•14mo ago

it tells you exactly what to do what is the first comment of the instructions you dont undersatand?

MRW419OP•14mo ago

I get what to it wants me to do but figuring out how it works doesn't

ZacharyPatten•14mo ago

what do you mean by "figuring out how it works doesn't"? based on what you shared you haven't even started the assignment start with the first instruction

Define a simple class called MyMath

do that first

MRW419OP•14mo ago

Ok so that would simple

public class MyMath
{
  public static int Add(int a, int b)
  {
    Add = a + B
  } 

}

public class MyMath
{
  public static int Add(int a, int b)
  {
    Add = a + B
  } 

}

That's how far I got

ZacharyPatten•14mo ago

that is a good start but not quite right you are correctly declaring a class "MyMath" so that is fine, and you made a method "Add" and you made it static as instructed. so all that is good but you have compiler errors inside your Add method what compiler errors are you getting at the moment? you should see some

MRW419OP•14mo ago

well it was compiler erroe CS1955

ZacharyPatten•14mo ago

yep, and what is the message with it

MRW419OP•14mo ago

Non-invocable member 'name' cannot be used like a method.

ZacharyPatten•14mo ago

Add = a + B look at this line specifically. it is not right

MRW419OP•14mo ago

Oh, wait. Do I need to declare Add as a int?

ZacharyPatten•14mo ago

no what you are making is a method methods have a "return"

MRW419OP•14mo ago

ZacharyPatten•14mo ago

you have defined the method to return an int but you never return anything currently

MRW419OP•14mo ago

I see so I show make this?

return Add

return Add

ZacharyPatten•14mo ago

you do need return. but you need to return the sum of a and b

MRW419OP•14mo ago

Which equals add

ZacharyPatten•14mo ago

no "Add" is the name of the method you don't need to write "Add" instide the method you already defined teh method

MRW419OP•14mo ago

So name it something else?

ZacharyPatten•14mo ago

you are writing the code that will run when "Add" is called

MRW419OP•14mo ago

Then return that vaule?

ZacharyPatten•14mo ago

https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/methods#return-values

Methods - C# Programming Guide - C#

A method in C# is a code block that contains a series of statements. A program runs the statements by calling the method and specifying arguments.

ZacharyPatten•14mo ago

look at that documentation and see if you can figure out what you need

MRW419OP•14mo ago

So like

Number = a + b;
return Number;

Number = a + b;
return Number;

ZacharyPatten•14mo ago

closer what is "Number"?

MRW419OP•14mo ago

A int

ZacharyPatten•14mo ago

no it isn't you jsut wrote "Number" you didn't write int Number C# is a type safe language when you define a variable, you have to define the type of the variable too

MRW419OP•14mo ago

I see

ZacharyPatten•14mo ago

int a; string b; object c; you always have type then variablename

MRW419OP•14mo ago

Alright one more time

int Number = a + b;
return Number;

int Number = a + b;
return Number;

ZacharyPatten•14mo ago

that should work 🙂 however you can simplify it to just return a + b; you don't need to declare "Number". it is unnecessary bloat. you can do it.. just unnecessary

MRW419OP•14mo ago

But woulden't that be needed when doign the sumtotal?

ZacharyPatten•14mo ago

I'm not sure what exactly you are asking

MRW419OP•14mo ago

print(MyMath.Add(10,15)); print(MyMath.Add(13,22)); print(MyMath.Add(56,83)); print(MyMath.sumTotal); At the end is the sum total of everything we added Don't we need that Number so we can use it to make equal the sumtotal?

ZacharyPatten•14mo ago

sumTotal is a seperate member from Add Your add method should be good you haven't declared sumTotal yet but yes you will need to add up the sum total sorry I missed that in your instructions so

int Number = a + b;
return Number;

int Number = a + b;
return Number;

is probably what you want yes, but you need to add "Number" to the sumTotal before you return

MRW419OP•14mo ago

Alright got it, thank you for your help.

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Is anyone good with statice modifier?