Miscellaneous String and Character functions in C

Here is a comprehensive list of miscellaneous string and character functions available in C:

1. isalpha(): checks if a character is an alphabetic letter.
2. isdigit(): checks if a character is a digit.
3. isalnum(): checks if a character is an alphabetic letter or a digit.
4. isblank(): checks if a character is a space or a tab.
5. isspace(): checks if a character is a whitespace character (space, tab, newline, etc.).
6. islower(): checks if a character is a lowercase letter.
7. isupper(): checks if a character is an uppercase letter.
8. tolower(): converts a character to lowercase.
9. toupper(): converts a character to uppercase.
10. strcat(): concatenates two strings.
11. strchr(): finds the first occurrence of a character in a string.
12. strcmp(): compares two strings.
13. strcpy(): copies one string to another.
14. strcspn(): returns the length of the initial segment of a string that does not contain any of a set of characters.
15. strdup(): duplicates a string.
16. strlen(): returns the length of a string.
17. strncat(): concatenates a specified number of characters from one string to another.
18. strncmp(): compares a specified number of characters of two strings.
19. strncpy(): copies a specified number of characters from one string to another.
20. strpbrk(): finds the first occurrence in a string of any of a set of characters.
21. strrchr(): finds the last occurrence of a character in a string.
22. strspn(): returns the length of the initial segment of a string that contains only a set of characters.
23. strstr(): finds the first occurrence of a string in another string.
24. strtok(): breaks a string into a series of tokens based on a delimiter.
25. memset(): fills a block of memory with a specified value.
26. memcpy(): copies a block of memory from one location to another.
27. memmove(): moves a block of memory from one location to another.

These functions provide powerful tools for working with strings and characters in C.