runif with condition

Hi
I want to generate 4 random number which sum up to 100 always

"Random" plus condition == "non-random"

Perhaps you want 3 "random" numbers conjoined to the difference of  
their sum and 100? Or perhaps you want 4 "random" numbers multiplied  
by 100/sum(.)

(In either case you will not be getting "4 random numbers".)

David Winsemius, MD
West Hartford, CT