memcmp

 

C

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Type support

Dynamic memory management

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Program utilities

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Strings library

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Input/output support

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Strings library

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Null-terminated byte strings

Functions
Character manipulation
isalnum isalpha islower isupper isdigit isxdigit isblank (C++11)	iscntrl isgraph isspace isprint ispunct tolower toupper
Conversions to numeric formats
atof atoi atol atoll strtol strtoll	strtoul strtoull strtof strtod strtold
String manipulation
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strncpy
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String examination
strlen strcmp strncmp strcoll strchr strrchr	strspn strcspn strpbrk strstr strtok
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memchr
memcmp
memset
memcpy
memmove
Miscellaneous
strerror

 

Defined in header <string.h>
int memcmp( const void* lhs, const void* rhs, size_t count );

Compares the first count characters of the objects pointed to by lhs and rhs. The comparison is done lexicographically.

Parameters

lhs, rhs	-	pointers to the memory buffers to compare
count	-	number of bytes to examine

Return value

Negative value if lhs is less than rhs.

​0​ if lhs is equal to rhs.

Positive value if lhs is greater than rhs.

See also

strcmp	compares two strings (function)
strncmp	compares a certain amount of characters of two strings (function)