Decimals?

[Arrow]

Noob question here...
how do i make "randint(x,y,z)" generate a number with a certain number of decimals? not just a whole number...

btw x, y, and z are declared: "var x:int"

[azndragon]

Setting your variables as real type would help

[Tony]

rand(x:real)
will assign a random floating point (decimal) number between 0 and 1 to variable x

to get a value you want from it, you add the lower range and multiply by highrange - lowrange.

here's what I mean... say you want a 50 to 100 range.
so you do:

code:

rand(x) x:=x*(highrange-lowrange)+lowrange

where highrange would be 100 and lowrange would be 50

this code will assign a real value to x from 50 to 100.

[Arrow]

Hmm, thanks for the replys, still dont really understand though...
Heres my code:

Quote:

var x:int
var y:int
var a:int
put "Enter the Minimum Value"
get x
put "Enter the Highest Value"
get y
randint(a,x,y)
put "A random number between these two is ", a

How would I go about changing x into a "real" number?
var x:real doesnt work

[Tony]

thats because randint fuction generates a random integer (whole) value, not real. you have to use rand() to generate a random real number between 0 and 1.

code:

var low:real var high:real var x:real rand(x) x:=x*(high-low)+low put "a random number between ", low," and ",high," is ", x

[Dan]

i just whonted to add on to this for poleop who did not know.

an int or intager is a number with no decliampe places (whole number).

ie. 56

an real number is a number with declmale places.

ie. 56.56789


to decaler an var as an int (a var that will only take whole numbers):

code:

var nameofvar:int

to decaler an var as real (a var that has decalmal numbers):

code:

var nameofvar:real

you are going to decaler your veriables as real if you whont to us the rand() comand to get random numbers with random decmail dlaces.

[Tony]

hah, thats what I love about C++, you can promote your variables in the program and your integer will turn into real if you do an operation with it containing a real number.

No more type mismatches

*caugh*This is getting off topic

[Dan]

ya that is nice. the ony porblem is when going from float to int it will not rownd just cut off the decmals, but it is still better then turings sytem.

[Tony]

oh, I'm fine with that... if you want to have it round floating point instead of dropping the decimal, you just add 0.5 before converting. It will be rounded perfectly

[*GoGeTa*]

tell me exactly what you need help on adn send me your program .... i'll try to help

[wtd]

tony wrote:

hah, thats what I love about C++, you can promote your variables in the program and your integer will turn into real if you do an operation with it containing a real number.

No more type mismatches

*caugh*This is getting off topic

That behavior in C, C++ and various other languages causes a lot of problems, actually.

[Cervantes]

is that the 'goto' of C/C++? I wonder what kind of problems you are talking about, though: problems with coding it or problems with that method generally being frowned upon (like goto)

[wtd]

Well, it's generally preferable for your compiler to point out the fact that you're using an integer where you intended a floating point number to be used. It allows you to find that semantic (rather than syntactic) error right away, rather than waiting until it becomes a problem.

[Dan]

*GoGeTa* wrote:

tell me exactly what you need help on adn send me your program .... i'll try to help

ummm guys this post was made like a year ago