I am a little bit lost as I am new to programming, can anyone guide how I would start with this question?

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void computeXY(double p[2],int x,int y)
-imagine the x y values being the width and height of a triangle
-the function should set p to the width and height of that triangle when the hypotenuse is 1
-should basically divide x and y by the hypotenuse of the triangle they make
-p[0] = x
-p[1] = y
-example: computeXY(p,3,4) should set p[0] to 0.6 and p[1] to 0.8

What I have tried:

Don't know how to start. I am still struggling with how to approach this question.

Posted 29-Nov-17 11:42am

Member 13548722

Updated 29-Nov-17 20:35pm

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cvogt61457 29-Nov-17 20:43pm

First, you need to determine the equations to use.
Be able to solve the problem on paper with your equations.
Then you write your program.
It's not too early to learn how to use the debugger.

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OriginalGriff · Accepted Answer · 2017-11-29T20:27:00

Start with Pythagoras:
x² + y² = z²

You are given the width x and height y of the triangle, so you can calculate z:

z = Square Root(x * x + y * y)

You now need to know the ratio of this triangle to a triangle with a z of 1:
z₁ = 1 / z;
You can then multiply x and y by z₁ and you have the values.

KarstenK · Accepted Answer · 2017-11-29T20:35:00

At first you should understand the task, for that inform about trigonometry. Your width and height are the input for the math at a right angled triangle. With the law of pythagoras you will get the hypothenuse. With that result you divide and set the output into the pointers. Use float for computation.

I am a little bit lost as I am new to programming, can anyone guide how I would start with this question?

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