stddef.h – Defines several useful types and macros.h which contains C function declarations and macro definitions to be shared between several source files. Header Files Inclusion: The first and foremost component is the inclusion of the Header files in a C program.Ī header file is a file with extension.The components of the above structure are:.The structure of a C program is as follows: Writing a C program in any other structure will hence lead to a Compilation Error. By structure, it is meant that any program can be written in this structure only. C++ is nearly a superset of C language (Few programs may compile in C, but not in C++).Īfter the above discussion, we can formally assess the structure of a C program. Like syntax of Java, PHP, JavaScript, and many other languages are mainly based on the C language. Many later languages have borrowed syntax/features directly or indirectly from the C language.
The main features of the C language include low-level memory access, a simple set of keywords, and a clean style, these features make C language suitable for system programmings like an operating system or compiler development. It was mainly developed as a system programming language to write an operating system. It was initially developed by Dennis Ritchie in the year 1972.
Internal Linkage and External Linkage in C.How Linkers Resolve Global Symbols Defined at Multiple Places?.How are variables scoped in C – Static or Dynamic?.Compiling a C program:- Behind the Scenes.Interesting Facts about Macros and Preprocessors in C.Difference between #define and const in C?.Difference between “int main()” and “int main(void)” in C/C++?.Is it fine to write void main() or main() in C/C++?.ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.