cpp stacks

Here is an explanation of each step involving stacks in C++:

  1. Include the necessary header file: To use stacks in C++, you need to include the <stack> header file at the beginning of your program. This file contains the necessary declarations and functions for working with stacks.

  2. Declare a stack: To create a stack, you need to declare an object of the stack class. You can define the stack to hold elements of a specific data type, such as int, char, or a user-defined class.

  3. Push elements onto the stack: To add elements to the stack, you can use the push() function. This function takes the value you want to add as a parameter and inserts it at the top of the stack.

  4. Check if the stack is empty: You can use the empty() function to check if the stack is empty. It returns true if the stack is empty and false otherwise.

  5. Get the top element: To access the top element of the stack without removing it, you can use the top() function. This function returns the value of the element at the top of the stack without modifying the stack itself.

  6. Pop elements from the stack: To remove the top element from the stack, you can use the pop() function. This function removes the element from the top of the stack and updates the stack accordingly.

  7. Get the size of the stack: You can use the size() function to get the number of elements currently stored in the stack. This function returns an integer representing the size of the stack.

These are the basic steps involved in working with stacks in C++. Remember to include the necessary header file, declare a stack object, push and pop elements, check if the stack is empty, access the top element, and get the size of the stack.