Command line arguments in C are a way to pass arguments to a program when it is invoked from the command line. Command line arguments are typically used to specify input files, output files, and other configuration options for the program. In C, command line arguments are passed to the `main` function through its arguments. … Read more
Recursion in C is a programming technique that involves a function calling itself, either directly or indirectly. Recursive functions are useful for solving problems that can be broken down into smaller sub-problems that are similar in nature. The recursive function operates on the sub-problems until they are small enough to be solved directly, and then … Read more
Bitwise operators in C are operators that perform operations on the individual bits of integer operands. These operators are useful for manipulating binary data, such as in low-level programming, cryptography, and digital signal processing. Here are the bitwise operators in C: 1. `&` (bitwise AND): This operator performs a bitwise AND operation on the corresponding … Read more
Conditional compilation in C is a feature of the preprocessor that allows you to selectively compile parts of the code based on certain conditions. This can be useful for creating different versions of the same code for different platforms, or for enabling and disabling certain features based on configuration options. Conditional compilation is typically performed … Read more
Macro substitution in C is a feature of the preprocessor that allows you to define macros that can be used to replace code in the source file before it is compiled. Macros are defined using the `#define` directive, and are typically used to define constants or to create shorthand notations for complex expressions. The syntax … Read more
Preprocessor directives in C are commands that are executed by the preprocessor before the code is compiled. They are used to perform actions such as including header files, defining constants, and performing conditional compilation. Preprocessor directives are denoted by the `#` symbol at the beginning of a line of code. Here are some commonly used … Read more
Binary file handling in C involves reading from and writing to binary files, which contain data in a binary format. Binary files are typically used to store data that is not text-based, such as images, audio, and video files. The standard C library provides a set of functions for binary file I/O operations. In general, … Read more
File input/output (I/O) in C involves reading from and writing to files. The standard C library provides a set of functions for file I/O operations. In general, file I/O involves the following steps: 1. Open the file: To read from or write to a file, it must be opened using the `fopen()` function. The function … Read more
In C, file operations are performed using the standard C library’s file input/output (I/O) functions. These functions allow you to create, open, read, write, and close files. The most commonly used file I/O functions in C are `fopen()`, `fclose()`, `fread()`, `fwrite()`, `fprintf()`, and `fscanf()`. 1. `fopen()` function: This function is used to open a file. … Read more
In C, memory management functions are used to allocate, deallocate, and manage memory dynamically during program execution. The most commonly used memory management functions in C are `malloc()`, `calloc()`, `realloc()`, and `free()`. 1. `malloc()` function: This function allocates a block of memory of the specified size and returns a pointer to the first byte of … Read more