Randomizing Varible! PLEASE HELP!

[TopBypass]

I have made variables (a, b and c) and now i need to have them be picked but completely randomly and i am using Rand.Int but it wont work!! I really need help with this its for a final!! Thank you sooo much!

[michaelp]

What do you mean by "won't work?" Is is the same number every time, a, b, and c are all the same? Did you test the variables using "put a" or "put b" or "put c"?
If you want them completely random, just use the arguments 1 and a really big number.

[Gooie]

Use something like this.

code:

RandomChoice := Rand.Int (1, 3) if RandomChoice = 1 then     put "cat" elsif RandomChoice = 2 then     put "dog" elsif RandomChoice = 3 then     put "fish" end if

A case would be better though.

[TopBypass]

Still wont work, im getting an error. This is what i am trying to do:

Write a program that plots points at A(300, 50), B(50, 500) and C(550, 500) - I finished this here is how i did it:

code:

Draw.Dot (300, 50, black) Draw.Dot (50, 500, black) Draw.Dot (550, 500, black)

Now i need to:
randomly choose either A, B or C (lets say it was A) and plot a new point, Q, which is half way between P and A.

[TopBypass]

Im still confused and i really do need this as quickly as possible so please help me! Thank you!

[TopBypass]

Alright i messed up something. Here is what i need from the start. I need to plot a point called A as a variable. A has to be a certain point BUT I HAVE NOOOO IDEA HOW TO DO THIS. I have tried making its value Draw.Dot (number, number, color) but that wont work either.

[Gooie]

Alright, well what data type are is A?

[TopBypass]

I defined it as an int

[Gooie]

Your first problem is that an Integer can't store two values (an ordered pair (x,y)).

[TopBypass]

Also do you know how to use putpixel? It says i am too use it but i cannot find it in turing.

[TopBypass]

What would i use than? Would a string work?

[Gooie]

I don't believe putpixel exists in Turing. I searched documentation, the internet, compsci, and I can declare a variable by that name. Are you sure your teacher isn't confused with another language?

[TopBypass]

Alright so far i can pick a random point and a random variable in which case it draws a dot in its location. Here is the code for that.

code:

var int_ax :int := 300 var int_ay :int := 50 var int_bx :int := 50 var int_by :int := 500 var int_cx :int := 550 var int_cy :int := 500 var int_p :int := Rand.Int (1, 1000) var random :int := Rand.Int (1, 3) Draw.Dot (int_ax, int_ay, black) %This is my A Draw.Dot (int_bx, int_by, black) %This is my B Draw.Dot (int_cx, int_cy, black) %This is my C Draw.Dot (int_p, int_p, black) %This is my P loop if random = 1 then     Draw.Dot (int_ax, int_ay, black) end if if random = 2 then     Draw.Dot (int_bx, int_by, black) end if if random = 2 then     Draw.Dot (int_cx, int_cy, black) end if end loop

Now what i want to do is make it so when it picks a random point (A or B or C) it makes a dot in between P and the randomly choicen one.

EDIT: It might be but its his exact type. "Pick a random point to start, call it P and plot it using putpixel"

[TopBypass]

Also the midpoint can be found by following this equation:

[TopBypass]

I think i have found one of my problems. I have giving int_p a specific Rand.Int point. Instead i need it to form anywhere on the page. Is this possible?

EDIT: By the way you have been a great help! Just wanted to say that it is not going unnoticed and i am completely grateful