I need a program that generates a nxn matrix with random numbers, but they're not completely random. They must be delimited in -20,0 < x < 20,0, for example, but all i searched for the Random functions in pascal says that it produce numbers in a interval starting in zero...so, i would like to know how do i generate random numbers in a -n < x < n interval.

If you don't want the same random numbers over and over again, at the very beginning of your program, call the randomize procedure.

As for the range, the problem is purely mathematical. If you have a list of seven numbers (0, 1, 2, 3, 4, 5, 6), what do you have to do to it to make it (-3, -2, -1, 0, 1, 2, 3)?

Hope this helps.

I thought about this, just would like to know if there was a specific command for what I need. Thank you very much.

No, the only function is random. If you say
x = random( 7 );

then x will be one of (0, 1, 2, 3, 4, 5, 6).

This program will generate a random number between -20 and 20.


Hoped this helped.

~ Artmann