ref: 68fc5b73b8cc4ba666d8d30d74762c71a0653a9d
dir: /doc/man3/strncmp.3/
.TH strncmp 3 .SH NAME strncmp - compare part of two strings .SH SYNOPSIS #include <string.h> int strncmp(const char *s1, const char *s2, size_t n) .SH DESCRIPTION The .BR strncmp () function compares not more than .I n characters (characters that follow a null character are not compared) from the array pointed to by .I s1 to the array pointed to by .IR s2 . .PP The value returned shall be used to determine if a string is lexicographically greater than, lesser than or equal to the other string. .SH RETURN VALUE The .BR strncmp () function shall return an integer greater than, equal to, or lesser than 0, if the string pointed to by .I s1 is greater than, equal to, or lesser than the string pointed to by .IR s2 , respectively. .PP The function shall return 0 if .I n is equal to 0. .SH STANDARDS ISO/IEC 9899:1999 Section 7.21.4.4