whatv are additional library files in c

In C, additional library files provide extra functionality that is not available in the standard library. These files contain pre-written code that can be included in your C programs to perform specific tasks. Some commonly used additional library files in C include:

1. stdio.h: This library provides functions for input and output operations, such as reading and writing to the console or files.

2. stdlib.h: This library contains functions for memory allocation, conversion, and other general-purpose functions like sorting and searching.

3. math.h: This library provides mathematical functions, such as trigonometric functions, logarithmic functions, and power functions.

4. string.h: This library contains functions for string manipulation, such as copying, concatenating, and comparing strings.

5. time.h: This library provides functions for working with date and time, such as getting the current time, formatting dates, and measuring time intervals.

6. ctype.h: This library contains functions for character handling, such as checking if a character is a digit, a letter, or a whitespace.

These are just a few examples of additional library files in C. There are many more libraries available, each serving a specific purpose. To use these libraries in your C program, you need to include the corresponding header file using the #include directive at the beginning of your program.