How to Create a Stack of User-Defined Data Type in C++?29 Aug 2024 | 4 min read In this article, we will discuss how to create a stack of User-Defined Data Types in C++. But before discussing the creation of a stack, we must know about the stack. What does std::stack mean?A data structure called a stack, uses the Last In, First Out (LIFO) method of operation. Only one end of the std::stack can be utilized to add and remove elements. The std::stack class is an adaptor for containers. Similar data types are stored in container objects, and different sequence containers can be combined to form a stack. If no container is provided, the deque container will be used by default. Data manipulation is not possible with container adapters as they do not allow iterators. In C++, one way to create a stack of user-defined data types is to utilise the std::stack container adapter and other capabilities offered by the Standard Template Library (STL). Syntax:It has the following syntax:
Stack Operations:Basic operations supported by a C++ stack include:
Example:Let us take an example to illustrate how to create a stack of user-defined data types in C++. Output: The top student name in the stack is: Name of the student is: Jacob, Age of the student is: 28 Students in the stack are: The name of the student is: Jacob, Age of the student is: 26 The name of the student is: Joseph, Age of the student is: 29 The name of the student is: Johnson, Age of the student is: 27 Explanation: In this example, this code shows how to manage a set of user-defined objects (Demo objects) in C++ using a stack. It demonstrates how to access the top element, push, pop, and check for empty, among other fundamental stack operations. It further demonstrates how to overload operators such as << for user-defined classes to customise output. Applications of the stack:There are several applications of the stack in C++. Some main applications of the stack are as follows: 1. Management of Function Calls Programming languages heavily use stacks to handle function calls and return addresses. A function's parameters, local variables, and return address are placed into the stack when it is called and removed from it upon its return. 2. Evaluation of Expression Arithmetic expressions, including infix, postfix, and prefix expressions, are evaluated using stacks. Operators and operands are stacked during evaluation, and operations are carried out according to their associativity and precedence. 3. History of browsers Users may go back and forth across previously seen websites using stacks to manage their browser history. 4. Undo/Redo Features Stacks are often used in text editors and graphical apps to create undo and redo functions that allow users to undo changes they have made to documents or designs. 5. Managing Memory In computer systems, stacks are essential for managing memory. Stack-based data structures, including the call stack and stack frames, are frequently used to implement memory allocation and deallocation. Next TopicMunmap_chunk invalid pointer in C++ |
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