Can somone build me a script that give me a random number?
when I type !random 3 70 it display me a random number between 3 and 70
When you can build me one i be your slave
USG|Shinji, there are a couple of questions/issues when writing such script.when I type !random 3 70 it display me a random number between 3 and 70
When you can build me one i be your slave
1. The first question is whether the script should deal with integers only or floats?
2. The second question is if the script should be able to deal with negative integers?
3. The third question is whether the script must include the upper and lower integer as possible values?
4. The fourth question is how rigorous the script must check and respond to the userinput? What if the user types "!random 10 ahahah"?
5. If the script should be able to handle integers, one is bound by the maximum and minimum representable integer (MAXINT and MININT or whatever name they have on your machine
).On most 32 bit machines this minimum and maximum are -2147483648 and 2147483647 respectively.
6. Additionally, suppose one allows negative integers on the aforementioned 32 bit machine.
An (idiotic) user types: "!random -1 2147483647" i.e. the script is to find a random integer between these two values. Commonly used intermediate calculations will subtract the upper integer from the lower integer: 2147483647 - - 1 = 2147483648. This resulting integer can not be represented correctly as an integer, because it exceeds the maximum integer value. In this particular case most likely it will be represented as -2147483648. The same happens when a commonly used method adds 1 to the upper integer and this integer happens to be 2147483647. This problem can be avoided by doing all the calculations using floats and using the [expr int()] or [expr round()] functions afterwards.
My experiment can be found at:
http://members.fortunecity.com/eggheadt ... er.tcl.txt
1. Script handles signed decimal integers.
2. Script handles negative integers.
3. Lower and upper integer are possible random numbers too.
4. Script will notify user on idiotic input.
5. Integers must be in the range of MININT and MAXINT. It is possible to extend this range substantially by switching from integers to a mix of strings and floats.
6. Script uses zero [catches]
Statistics: Posted by egghead — Wed Oct 16, 2002 5:00 pm
]]>
