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C Struct and Union Interview Questions

Last Updated: 15 November 2025

Structures and unions are essential user-defined data types in C, widely used in system-level programming, embedded development, memory-constrained applications, and low-l...read more

C Language

C-Structure & Union

C-Interview

How to Write a Struct to a Binary File in C?

Last Updated: 23 July 2025

C file handling allows users to store the data from a C program to a file in either the text or the binary format. In this article, we will learn how to write a struct to ...read more

How to Create a Dynamic Array Inside a Structure?

Last Updated: 23 July 2025

In C, the structure can store the array data types as one of its members. In this article, we will learn how to create a dynamic array inside a structure in C.Creating a D...read more

How to Add an Element to an Array of Structs in C?

Last Updated: 23 July 2025

In C, a struct is a user-defined data type that allows the users to group related data in a single object. An array of structs allows to store multiple structs in contiguo...read more

Array within Structure in C

Last Updated: 23 July 2025

In C, a structure is a user-defined data type that allows us to combine data of different data types. While an array is a collection of elements of the same type. In this ...read more

How to Iterate Through Array of Structs in C?

Last Updated: 23 July 2025

In C, while working with an array of structs we have to iterate through each struct in an array to perform certain operations or access its members. In this article, we wi...read more

How to Initialize Structures in C?

Last Updated: 23 July 2025

In C, a structure (struct) is a user-defined data type that allows us to combine data items of different data types into a single unit. In this article, we will learn how ...read more

How to Search in Array of Struct in C?

Last Updated: 23 July 2025

In C, a struct (short for structure) is a user-defined data type that allows us to combine data items of different kinds. An array of structs is an array in which each ele...read more

How to Create a Dynamic Array of Structs?

Last Updated: 23 July 2025

In C, we have dynamic arrays in which we can allocate an array of elements whose size is determined during runtime. In this article, we will learn how to create a dynamic ...read more

C-Dynamic Memory Allocation

C Examples

How to Initialize Array of Structs in C?

Last Updated: 23 July 2025

In C, arrays are data structures that store the data in contiguous memory locations. While structs are used to create user-defined data types. In this article, we will lea...read more

How to Pack a Struct in C?

Last Updated: 23 July 2025

In C, when you declare a structure, the compiler allocates memory for its members, and the way it does this can involve adding padding between members for alignment purpos...read more

How to Dynamically Create Array of Structs in C?

Last Updated: 23 July 2025

In C, an array is a data structure that stores the collection of elements of similar types. Structs in C allow the users to create user-defined data types that can contain...read more

C-Dynamic Memory Allocation

C Examples

How to Read a Struct from a Binary File in C?

Last Updated: 23 July 2025

The structure in C allows the users to create user-defined data types that can be used to group data items of different types into a single unit. We can save this structur...read more

How to Insert an Element into an Array of Structs at a Specific Position in C?

Last Updated: 23 July 2025

In C, structs allow the users to create user-defined data types which can be used to store data of different types in a single unit. In many use cases, we might use an arr...read more

How to Declare a Struct Member Inside a Union in C?

Last Updated: 23 July 2025

A union contains different types of variables as its members and all these members share a memory location. In this article, we will learn how to declare and access the st...read more

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URL: https://www.geeksforgeeks.org/tag/c-structure-union/

⇱ C-Structure & Union Archives - GeeksforGeeks

URL: https://www.geeksforgeeks.org/tag/c-structure-union/

⇱ C-Structure &amp; Union Archives - GeeksforGeeks

⇱ C-Structure & Union Archives - GeeksforGeeks