Some other string functions are:

1. strncpy function: Copies characters from one string to another up to a specified length.
   Syntax: strncpy(str1, str2, 10);
2. stricmp function: Compares two strings ignoring case differences.
   Syntax: n = stricmp(str1, str2);
   
3. strncmp function: Compares two strings up to a specified length.
   Syntax: n = strncmp(str1, str2, 10);
   
4. strchr function: Returns the address of the first occurrence of a specified character in a string.
   Syntax: cp = strchr(str, c);
   
5. strset function: Replaces all characters in a string with a specified character.
   Syntax: strset(first, ch);
6. strncat function: Appends up to a specified length of one string to another.
   Syntax: strncat(str1, str2, 10);
   
7. strupr function: Converts lower case characters of a string to upper case.
   Syntax: strupr(str1);
   
8. strstr function: Returns the address from where the second string starts in the first string.
   Syntax: cp = strstr(first, second);