The Single UNIX ® Specification, Version 2
Copyright © 1997 The Open Group

 NAME

strncmp - compare part of two strings

 SYNOPSIS



#include <string.h>

int strncmp(const char *s1, const char *s2, size_t n);

 DESCRIPTION

The strncmp() function compares not more than n bytes (bytes that follow a null byte are not compared) from the array pointed to by s1 to the array pointed to by s2.

The sign of a non-zero return value is determined by the sign of the difference between the values of the first pair of bytes (both interpreted as type unsigned char) that differ in the strings being compared.

 RETURN VALUE

Upon successful completion, strncmp() returns an integer greater than, equal to or less than 0, if the possibly null-terminated array pointed to by s1 is greater than, equal to or less than the possibly null-terminated array pointed to by s2 respectively.

 ERRORS

No errors are defined.

 EXAMPLES

None.

 APPLICATION USAGE

None.

 FUTURE DIRECTIONS

None.

 SEE ALSO

strcmp(), <string.h>.

DERIVATION

Derived from Issue 1 of the SVID.

UNIX ® is a registered Trademark of The Open Group.
Copyright © 1997 The Open Group
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