There is a salon where both males and females can get the salon service. However there is a condition that males and females cannot come to salon at the same time. The second condition is that there...

There is a salon where both males and females can get the salon service. However there is a condition that males and females cannot come to salon at the same time. The second condition is that there cannot be more than three persons in the salon at a time. Write a synchronization solution to this problem in C language.