Regular Expressions in C

Regular expressions are used for searching strings in text files. Regular expressions are explained with usage in a C program.

C Programming Tutorial 5: Structures and Unions

A structure is a collection of variables, which are called its members. A union is a variable that holds different types at different times.

A pointer variable holds the address of another variable. An array stores the elements of the same type in consecutive locations.

A C program comprises of functions. Functions comprise of statements, which determine the control flow in the program.

A C programming tutorial explaining data types, declarations, operators, conditional expressions and precedence and associativity rules.

A C programming tutorial for beginners, explaining constants, variables, expressions, input and output and overall program structure.

I/O multiplexing is doing I/O on multiple file descriptors. I/O multiplexing is explained with socket programming in C using poll and epoll.

POSIX real-time signals are defined apart from the existing standard signals. The real-time signals are in the range SIGRTMIN to SIGRTMAX.

Temporary files are often required for storing interim data. How to create a temporary file in a C program is explained with example code.

Unix domain sockets provide a fast and simple mechanism for interprocess communication on a Unix-like host system using the socket interface.