Stupid procedure problem

[A.J]

I don't remember whta's wrong with calling a procedure in itself?

here's the code:

C:

void guess(int lower,int upper) {     int guess=(lower+upper)/2;     char hl;     cout<<guess<<endl;     cin>>hl;     if (hl=='L')     {         guess(guess+1,upper);     }     else if(hl=='H')     {         guess(lower,guess-1);     } }

please help

EDIT: NVM I got it (I used same variable names for the procedure and a variable)