Practice your C Programming Skills

A programming language, like any language, needs a lot of practice to master.

Playing around with the language and with basic algorithms can really help. If you are a beginner I recommend you try and test various features of the C language for yourself, even the behavior of basic statements like the 'if', 'for', 'while' or 'switch' can be explored and give rise to important insights.

Try solving math and logic problems - I recommend you play around with the simple problems in Project Euler and work your way to the more sophisticated ones.

And of course, if you are a student, do your homework and do it by yourself.