Interview Questions C is a general-purpose mid-level programming language developed by Dennis M. Ritchie at Bell Laboratories in 1972. It was initially used for the development of UNIX operating system, but it later became popular for a wide range of applications. C is considered mother of all programming languages as many later languages like Java, PHP and JavaScript have borrowed syntax/features directly or indirectly from the C. Learning C programming first helps to learn any modern programming language as it provide a deeper understanding of the fundamentals of programming and operating system with features like pointers. C is widely used in operating systems, embedded systems, compilers, databases, networking, game engines and real-time systems for its efficiency to work in low resource environment and hardware-level support. Before starting with C basics, first set up the C development environment . Install a C compiler and choose an IDE such as Visual Studio Code or Code::Blocks to write, compile, run, and debug C programs. Compilation Process Input and Output Conditional Statements Functions are block of code that performs a specific task. They allow programmers to write modular and reusable code. Parameter Passing Techniques Inline Function Nested Functions Arrays and Strings Arrays and strings are fundamental data structures used to store and manipulate collections of values efficiently. Multidimensional Arrays String Functions Pointers are variables that store memory addresses and enable direct memory access and manipulation. Pointer Arithmetic Pointer to Pointer Function Pointers User Defined Data Types User-defined data types allow programmers to create custom data structures for organizing related data efficiently. Enumeration (or enum) Memory Management The dynamic memory management in C uses functions like malloc(), calloc(), realloc(), and free() to manually manage the memory while avoiding errors such as memory leak. Program's Memory Layout Dynamic Memory Allocation This section teaches you how to work with files in C, including creating, reading, writing, manipulating and deleting files. Basics of File Handling Read/Write Structure From/to a File EOF, getc() and feof() Unlike other programming languages that have automatic error handling, In C language error handling is to be manually done by the developers using error-handling methods, debugging strategies, and functions like perror(), strerror(), etc. Exception Handling Using goto File Error Handling Divide by Zero Exception Miscellaneous Concepts This section explores various essential of C language that do not fit into a single category but play a vital role in C programming and provide advanced functionality to your program. Storage Classes Advanced Concepts This section teaches you high-level C programming techniques such as multi-threading, signal handling, socket programming, etc which are used in creating high-performance robust applications and systems. Variadic Functions Input-Output System Calls

Socket Programming _Generics Keyword Important Links Comparison of various programming languages Careers and Jobs Companies That Use C Now that you have a strong foundation in C language, you can explore more advanced topics such as Data structures and Algorithms in C. Keep challenging yourself with our collection of practice problems to further strengthen you understanding of the language: C Programming Interview Questions and Answers Data structures and Algorithms in C Fundamental Practice Problems Functions Practice Problems Compound Data Types Practice Problems Introduction 3 min read Identifiers 3 min read Keywords 3 min read Variables 4 min read Data Types 4 min read Operators 8 min read Conditional Statements 4 min read Loops 6 min read Functions 4 min read Arrays 4 min read Strings 5 min read Pointers 7 min read Function Pointer 5 min read Unions 3 min read Enumeration 4 min read Structure Alignment, Padding & Data Packing 5 min read Memory Layout 5 min read Dynamic Memory Allocation 7 min read Memory Leak 3 min read File Handling 11 min read Read/Write Structures 4 min read Error Handling 5 min read Using goto for Exception Handling in C 2 min read File Error Handling 5 min read Variadic Functions 4 min read Signals in C 4 min read Socket Programming 8 min read _Generics Keyword 3 min read Multithreading 4 min read Placement 360 Course 2 min read DSA and System Design Course 2 min read