C-Struct-Union-Enum

16 posts

Last Updated: 23 July 2025

In C programming, bothenums (short for enumeration)andmacros are used for defining symbolic names associated with specific values. However, there are situations where usin...read more

When to Use Enum Instead of Define in C?

Last Updated: 23 July 2025

In C programming, both#defineandenumcan be used to declare integer constants but there are situations where usingenumis more beneficial than#define. In this article, we wi...read more

How to Modify Struct Members Using a Pointer in C?

Last Updated: 23 July 2025

In C++, we use structure to group multiple different types of variables inside a single type. These different variables are called the members of structures. In this artic...read more

How to Use a Union to Save Memory in C?

Last Updated: 23 July 2025

Unions in C offer a unique mechanism for storing different variables in the same memory location. These variables are called members of the union and can be of different t...read more

How to Declare a Pointer to a Struct in C?

Last Updated: 23 July 2025

Structure (or structs) in the C programming language provides a way to combine variables of several data types under one name and pointers provide a means of storing memor...read more

Difference between Struct and Enum in C/C++ with Examples

Last Updated: 23 July 2025

Structure in C++A structure is a user-defined data type in C/C++. A structure creates a data type that can be used to group items of possibly different types into a single...read more

C++

C-Struct-Union-Enum

Array of Structures vs Array within a Structure in C

Last Updated: 15 July 2025

Both Array of Structures and Array within a Structure in C programming is a combination of arrays and structures but both are used to serve different purposes.Array within...read more

C program to store Student records as Structures and Sort them by Name

Last Updated: 11 July 2025

Given student's records with each record containing id, name and age of a student. Write a C program to read these records and display them in sorted order by name.Example...read more

“static const” vs “#define” vs “enum”

Last Updated: 11 July 2025

In this article, we will be analyzing "static const", "#define" and "enum". These three are often confusing and choosing which one to use can sometimes be a difficult task...read more

C++

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C-Struct-Union-Enum

Designated Initializers in C

Last Updated: 27 April 2022

Standard C90 requires the elements of an initializer to appear in a fixed order, the same as the order of the elements in the array or structure being initialized.In ISO C...read more

Sort an Array of Objects According to a Custom Criteria

Last Updated: 30 June 2026

Most programming languages provide built-in sorting functions that allow objects to be sorted using a user-defined comparison rule or key function. This makes it easy to s...read more

C++

cpp-structure

C-Struct-Union-Enum

Enumeration (or enum) in C

Last Updated: 18 July 2026

An enumeration (enum) is a user-defined data type that assigns meaningful names to a set of integer constants.By default, the first enum constant has the value 0, and each...read more

Last Updated: 25 October 2025

A union is a user-defined data type that can hold different data types, similar to a structure.Unlike structures, all members of a union are stored in the same memory loca...read more

Last Updated: 06 September 2021

What will be the size of following structure?CPP struct employee{ int emp_id; int name_len; char name[0];}; 4 + 4 + 0 = 8 bytes.And what ...read more

C Language

cpp-structure

C-Struct-Union-Enum

Structure Member Alignment, Padding and Data Packing

Last Updated: 19 June 2026

Structures group variables of different data types into a single user-defined type. To improve memory access efficiency, compilers may insert extra unused bytes between me...read more

C Language

C-Struct-Union-Enum

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