return functions

Programming Questions

mhlor3

in Programming Questions • 7 months ago

I have an assignment and am in need of some major help. The following are the instructions.

Write a program that multiplies three numbers together and prints the results to the screen. Do this for 5 sets of numbers. Use a function that returns the product of the three numbers to do this.

You may have lines like this in your code:

float product1 = myFunc(3,4,5);

text(product1, 50, 50);

GIve me an example please so I can understand better. I missed class due to a snow day.

Replies(6)

boub_pops..

Re: return functions

7 months ago

Hi !

A function grab arguments and return something.

In your case, we can see 3 arguments and the need to return a float.

Let's assume your 3 numbers are float too. and we get the basics of your function:

float myFunc(float a, floatb, float c) {
// do something here to make it work ;)
}

Then to mutliply three numbers is easy ;)

and to return something just use the return function: http://processing.org/reference/return.html :)

GoToLoop

Re: return functions

7 months ago

// do something here to make it work ;)

That would be:

return a * b * c;

boub_pops..

Re: return functions

7 months ago

You can at least let him search a bit for it ;)

mhlor3

Re: Re: return functions

7 months ago

Im so lost. This is what I have so far. PLease tell me what im doing wrong.

void setup()
{
//float product1=myFunc(3,4,5);
//float newNumber= calculateNumber(product1);
size(100,100);
}
void draw()
{
float product1=myFunc(3,4,5);
float newNumber= calculateNumber(product1);
text(product1,10,10);}

float calculateNumber(float a, float b, float c)
{
float newNumber=a*b*c;
return newNumber;}

boub_pops..

Re: return functions

7 months ago

myFunc is calculateNumber ;)

void setup()
{
size(100,100);
}
void draw()
{
float product1 = calculateNumber(3,4,5);
text(product1,10,10);}
float calculateNumber(float a, float b, float c)
{
float newNumber=a*b*c;
return newNumber;}

+ as stated before you can avoid using an intermediate variable in this easy function ... but as it's not always the case keep it like this :)

mhlor3

Re: Re: return functions

7 months ago

You are so helpful!!!!!!! Thank you very much! I'd be so lost without you guys. I cant find this information online or within the textbook at all.

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