What do each of the str-function abbreviations/acronyms mean?

Question

The C standard library string.h contains several functions to manipulate strings, all of which start with str and end with an abbreviation. Some of these abbreviations are obvious:

• strlen string length
• strcpy string copy
• strcmp string compare

Some are a bit less straightforward:

• strpbrk string pointer break?
• strspn string ...spn?
• strrchr string ... R char??
• strxfrm string... um... nevermind.

What do each of the str-function abbreviations/acronyms mean?

Answer 1

• strlen - find LENgth of string
• strcpy - CoPY strings
• strcmp - CoMPare strings
• strrchr - Reversely find CHaRacter
• strspn - calculate the length of SPaN of characters
• strxfrm - TRANS (written as X)-FoRM a string
• strpbrk - find the Point where string is BRoKen by any of the characters