Printting 'for' and 'while' indices

Consider the following: 

 > i <- 0
 > while(i < 5) {
    "do stuff"
    print(i)
    i <- i + 1
}
[1] 0
[1] 1
[1] 2
[1] 3
[1] 4
 > i <- 0
 > while(i < 5) {
    "do stuff"
    cat(i, "")
    i <- i + 1
}
0 1 2 3 4 > i <- 0
 > while(i < 100) {
    "do stuff"
    if((i %% 10) == 0)
        cat(i, "")
    i <- i + 1
}
0 10 20 30 40 50 60 70 80 90

      This was produced in S-Plus 6.2 under Windows 2000.  For some 
reason, when I copy this code from S-Plus to R1.8.1 via XEmacs, this is 
locking up R for me right now, and I can't figure out why.  However, I 
see no reason why these constructs would not work in R. 

      hope this helps. 
      spencer graves

Sorry, I forgot to correct the message subject, so I am resending my
doubt it below:


Hi all!

I wrote a very basic program in R, which has some loops ('for' and
'while').  Is there a way to print the 'for' (or while) indice while the
program is running so that I am able to estimate where the program is
and how long it will last?

I mean, I want something like this:

i<-0
While(i<100){
"do a lot of commands"
"print i"
i<-i+1
}

How do I "print" the "i" at each step?

Thanks in advance,

Marcos

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