I tried to compiler this in Dev-C++ v5.0 but it won't work. Help please

There

Code:

#include <iostream.h>
#include <stdlib.h>
int main()
{
cout<<"Welcome to Tic-Tac-Toe\n";
cout<<"What do you wish to do?\n";
cout<<"1.New Game\n";
cout<<"2.Options\n";
cout<<"3.Quit\n";
int mainmenunumber;
int difficulty;
cin>>mainmenunumber;
if (mainmenunumber==2)
{
system("CLS");
cout<<"Welcome to the Options Menu\n";
cout<<"1.Difficulty\n";
cout<<"2.Back\n";
int optionsmenu;
cin>>optionsmenu;
if (optionsmenu==1)
{
system("CLS");
cout<<"What difficulty lvl do you want?";
}
}
system("PAUSE");
return 0;
}

Does that look right? I am not getting any errors but as Dev-C++ is in Beta stages it won't run.

What's the problem?

Nothing now...Thanks for your help people