5 Strings and Memory (string.h)

This chapter describes string-handling functions and functions for managing areas of memory. The corresponding declarations are in string.h.

• bcmp: Compare two memory areas
• bcopy: Copy memory regions
• bzero: Initialize memory to zero
• index: Search for character in string
• memccpy: Copy memory regions up to end-token
• memchr: Find character in memory
• memcmp: Compare two memory areas
• memcpy: Copy memory regions
• memmem: Find memory segment
• memmove: Move possibly overlapping memory
• mempcpy: Copy memory regions and locate end
• memrchr: Reverse search for character in memory
• memset: Set an area of memory
• rawmemchr: Find character in memory
• rindex: Reverse search for character in string
• stpcpy: Copy string returning a pointer to its end
• stpncpy: Counted copy string returning a pointer to its end
• strcasecmp: Compare strings ignoring case
• strcasestr: Find string segment ignoring case
• strcat: Concatenate strings
• strchr: Search for character in string
• strchrnul: Search for character in string
• strcmp: Character string compare
• strcoll: Locale-specific character string compare
• strcpy: Copy string
• strcspn: Count chars not in string
• strerror: Convert error number to string
• strerror_r: Convert error number to string
• strlen: Character string length
• strlwr: Convert string to lowercase
• strncasecmp: Compare strings ignoring case
• strncat: Concatenate strings
• strncmp: Character string compare
• strncpy: Counted copy string
• strnlen: Character string length
• strpbrk: Find chars in string
• strrchr: Reverse search for character in string
• strsignal: Return signal message string
• strspn: Find initial match
• strstr: Find string segment
• strtok: Get next token from a string
• strupr: Convert string to upper case
• strxfrm: Transform string
• swab: Swap adjacent bytes
• wcscasecmp: Compare wide character strings ignoring case
• wcsdup: Wide character string duplicate
• wcsncasecmp: Compare wide character strings ignoring case