random numbers with threads

[hande]

Hi, I wrote a program with two threads playing a number guessing game.
one thread pick a number the other try to guess it. Also first thread
say try a lower or higher number. but my program crashes in defining
the bounds for generating random numbers.
For instance the first thread pick 35
the other say 19. he should pick a number bigger than 19. for now
that's ok. now second thread say 60. then first thread say lower
number. but my second thread is not like that. how i can define that
borders?

thanks a lot

 

[Martin Steen]

but my program crashes in defining
the bounds for generating random numbers.

What program?
What about posting some code?

 

[hande]

What program?
What about posting some code?

else if(num<gnum)
{
gnum=rand()%gnum;
temp2=gnum;
cout<<"Thread2: "<<gnum<<endl;
// pthread_mutex_unlock(&myMutex);
}
else if(num>gnum)
{
gnum=rand()%(100-gnum);
cout<<"Thread2: "<<gnum<<endl;
//pthread_mutex_unlock(&myMutex);
}

 

[Jim Langston]

Hi, I wrote a program with two threads playing a number guessing game.
one thread pick a number the other try to guess it. Also first thread
say try a lower or higher number. but my program crashes in defining
the bounds for generating random numbers.
For instance the first thread pick 35
the other say 19. he should pick a number bigger than 19. for now
that's ok. now second thread say 60. then first thread say lower
number. but my second thread is not like that. how i can define that
borders?

thanks a lot

First, try your program without the threads. See if it works that way. If
it does, then it's a threading issue and post some code at:
comp.programming.threads that is small enough to show the problem.

If it does not without the threads, it's a C++ error, post the smallest code
here that compiles that wll show the error.