recursion bit-manipulation conditional-statements variables hash-tables file-io function-pointers linked-lists pointers-and-arrays command-line-arguments dynamic-memory-allocation variadic-functions preprocessor-directives dynamic-libraries loops-and-iterations pointers-in-c static-libraries dynamic-memory-management structures-in-c pointers-arrays-strings

debugging hello preprocessing hash-tables file-io function-pointers malloc-free variadic-functions dynamic-libraries doubly-linked-lists argc-argv static-libraries stacks-queues-lifo-fifo singly-linked-lists variables-if-else-while pointers-arrays-strings structures-typedef