Question

Implement a stack (of ints) read functions.h, which contains the definition of the stack type and declarations of the stack operations which you must implement (push(), pop(), and peek()). pushing and popping should be done at the back (last element) of the array: let numbers

Answer 1

To implement a stack of integers in C, one needs to define the stack in a header file and implement functions for push, pop, and peek operations. These functions manage the addition and removal of elements at the end of the array while handling edge cases like stack overflow and underflow.

Step-by-step explanation:

Implementing a Stack in C

To implement a stack of integers in C, one needs to define the stack structure and its associated operations such as push(), pop(), and peek() within a header file, conventionally named functions.h. A stack typically functions with Last-In, First-Out (LIFO) behavior, and in this case, is expected to manipulate data at the back of the array.

In functions.h, the stack is usually defined with a structure that includes an array to hold the stack's content and possibly an integer to track the count of elements or the index of the top element.

The push() function adds an element to the top (back) of the stack and should handle scenarios such as stack overflow when the stack is full.

The pop() function removes the element from the top (back) of the stack and may return that element. It must also handle scenarios such as stack underflow, indicating the stack is empty and there are no elements to pop.

The peek() function allows one to view the top element without removing it, providing a means to check what's currently at the top of the stack.

Each of these functions requires careful management of the stack's state to ensure it operates correctly under different conditions.