shared variables initializations:

westblocked = 0
westcount = 0

eastblocked = 0
eastcount = 0


semaphores:

semaphore wp(1) : for protection of the west monkey shared stuff
semaphore ep(1) : for protection of the east monkey shared stuff
semaphore west(0) : blocks west monkeys
semaphore east(0) : blocks east monkeys

WEST:

if (eastcount>0){
wp.wait();
westblocked++;
wp.signal();
west.wait();
}

wp.wait();
westcount++;
wp.signal();

//CROSSING CODE

wp.wait();
westcount--;
wp.signal();

if(westcount==0){
    for(int x = 0; x<eastblocked; x++){
    east.signal();
    }
    eastblocked=0;
}


EAST:

if(westcount>0){
ep.wait();
eastblocked++;
ep.signal();
east.wait();
}

ep.wait();
eastcount++;
ep.signal();

//CROSS CODE

ep.wait();
eastcount--;
ep.signal();

if(eastcount==0){
    for(int x = 0; x<westblocked; x++){
    west.signal();
    }
    westblocked=0;
}