please help??

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Hey everyone,<br>Ive been given this problem and can only make a very scimpy start on it....<br>can someone please help me??<br><br><br>Synchronise 2 threads: 1 prints 1, second prints 2,<br>use semiphores for synchronisation (2 needed)<br>even wait- signal<br>odd wait- signaal<br>initial value of semiphores is needed<br>prints odd one = 1, waits on semiphore, <br>even= 2, signal odd signals = 3,<br>guarantee- one thread that prints first, not necessarily the one created first; placement of semiphore is crucial.<br>if loops are incorrect, one thread may die, if 1 less digit, 2nd loop may be too small. Ensure it still gets the semiphore.<br><br>Please Please sort this out....<br>Thanks<br>ken<br><br>Ps, this has to be written in c/c++