In this recipe, we will learn how to implement a stack that has a LIFO structure. LIFO means that whatever element was added to the stack last will be the first to be removed. The stack is a very important component of any compiler and operating system. The stack is used in branching operations, recursion, and many other system-level tasks. The stack can be implemented using arrays as well as through linked lists. In this recipe, we will learn how to implement a stack using a single linked list.