C Primer Plus®, Third Edition

String Handling: string.h

The string.h library defines the size_t type and the NULL macro for the null pointer. It provides several functions for analyzing and manipulating character strings and a few that deal with memory more generally. Table F.16 lists the functions.

Table F.16. Localization functions.

Prototype	Description
void *memchr(const void *s, int c, size_t n);	Searches for the first occurrence of c (converted to unsigned char) in the initial n characters of the object pointed to by s; returns a pointer to the first occurrence, NULL if none is found.
int memcmp(const void *s1, const void *s2, size_t n);	Compares the first n characters of the object pointed to by s1 to the first n characters of the object pointed to by s2, interpreting each ...