I try to print out 6 random numbers from 40 numbers
ex( 20,5,1,40,31,29)
the program which I have writen is ok, but I don't want that the program writes a random number more than one time.
ex
20,5,1,40,31,29) is ok
ex
20,5,5,40,31,29) is wrong. // how do I fix it?