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C header file: <string.h> - string operations

A header file is a file containing C declarations and macro definitions to be shared between several source files. You request the use of a header file in your program by including it, with the C preprocessing directive ‘#include’.

The <string.h> include file declares the string manipulation functions:

A complete table of string Lybrary:

Name Description
memchr() function find byte in memory.
memcmp() function compare bytes in memory.
memcpy() function copy bytes in memory.
memmove() function copy bytes in memory with overlapping areas.
memset() function set bytes in memory.
strcat() function concatenate two strings.
strncat() function concatenate a string with part of another.
strchr() function string scanning operation.
strcmp() function compare two strings.
strncmp() function compare part of two strings.
strcoll() function string comparison using collating information.
strcpy() function copy a string and return a pointer to the end of the result.
strncpy()function copy fixed length string, returning a pointer to the array end.
strcspn()function get the length of a complementary substring.
strerror()function get error message string.
strlen()function get length of fixed size string.
strpbrk()function scan a string for a byte.
strrchr()function string scanning operation.
strspn()function get length of a substring.
strstr()function find a substring.
strtok()function split string into tokens.
strxfrm()function string transformation.

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