Structure of a C program

C language combines the power of a low-level language and a high-level language. The low-level languages are used for system programming, while the high-level languages are used for application programming. It is because such languages are flexible and easy to use. Hence, C language is a widely used computer language.

It supports various operators, constructors, data structures, and loop constructs. The features of C programming make it possible to use the language for system programming, development of interpreters, compilers, operating systems, graphics, general utilities, etc. C is also used to write other applications, such as databases, compilers, word processors, and spreadsheets.

The essential features of a C program are as follows:

Pointers: it allows reference to a memory location by the name assigned to it in a program.

Memory allocation: At the time of definition, memory is assigned to a variable name, allowing dynamic allocation of the memory. It means that the program itself can request the operating system to release memory for use at the execution time.

Recursion: When a function calls itself, it is known as recursion.

Bit-manipulation: It refers to the manipulation of data in its lowest form. It is also known as bits. The computer stores the information in binary format(0 and 1).