C provides a set of standard library functions for performing common string operations. These functions are declared in the <string.h> header file and help simplify tasks like finding the length of a string, copying one string to another, joining two strings, and comparing strings. Using these functions avoids writing manual loops and makes the code cleaner and more efficient.

1. strlen() – String Length

2. strcpy() – Copy String

3. strcat() – Concatenate Strings

4. strcmp() – Compare Strings

Always make sure the destination string has enough space to avoid memory errors. These functions do not automatically allocate memory; you must manage memory size properly. Using these functions is safer and more efficient than manually handling characters with loops.