A struct is a data type that represents a composite data structure, consisting of one or more variables of different types

Structs are used to group together related data, such as marks of student

Struct is supported by many programming languages, including C, C++, and C#

structs can also be used to define new types and they can be used as function arguments

Structs can be used in various data structures, such as linked lists, stacks, queues, and trees

Structs can also have pointers to other structs, which allows for the creation of complex data structures