Setting your variables as real type would help
Computer Science Canada Decimals? |
| Author: | Arrow [ Wed Feb 12, 2003 4:55 pm ] |
| Post subject: | Decimals? |
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" |
|
| Author: | azndragon [ Wed Feb 12, 2003 5:33 pm ] |
| Post subject: | |
Setting your variables as real type would help |
|
| Author: | Tony [ Wed Feb 12, 2003 5:53 pm ] | ||
| Post subject: | |||
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:
where highrange would be 100 and lowrange would be 50 this code will assign a real value to x from 50 to 100. |
|||
| Author: | Arrow [ Wed Feb 12, 2003 10:56 pm ] |
| Post subject: | |
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 |
|
| Author: | Tony [ Thu Feb 13, 2003 9:49 am ] | ||
| Post subject: | |||
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.
|
|||
| Author: | Dan [ Thu Feb 13, 2003 4:07 pm ] | ||||
| Post subject: | a bit more | ||||
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):
to decaler an var as real (a var that has decalmal numbers):
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. |
|||||
| Author: | Tony [ Thu Feb 13, 2003 5:18 pm ] |
| Post subject: | |
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  |
|
| Author: | Dan [ Fri Feb 14, 2003 7:28 am ] |
| Post subject: | |
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.  |
|
| Author: | Tony [ Fri Feb 14, 2003 9:18 am ] |
| Post subject: | |
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 |
|
| Author: | *GoGeTa* [ Mon Oct 18, 2004 5:21 pm ] |
| Post subject: | Hey do you need help |
tell me exactly what you need help on adn send me your program .... i'll try to help |
|
| Author: | wtd [ Mon Oct 18, 2004 6:13 pm ] |
| Post subject: | |
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. |
|
| Author: | Cervantes [ Tue Oct 19, 2004 9:17 am ] |
| Post subject: | |
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) |
|
| Author: | wtd [ Tue Oct 19, 2004 1:20 pm ] |
| Post subject: | |
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. |
|
| Author: | Dan [ Wed Oct 20, 2004 10:24 pm ] |
| Post subject: | Re: Hey do you need help |
*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 |
|