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1.1 ! root 1: .\" Copyright (c) 1990 The Regents of the University of California. ! 2: .\" All rights reserved. ! 3: .\" ! 4: .\" This code is derived from software contributed to Berkeley by ! 5: .\" Chris Torek. ! 6: .\" ! 7: .\" Redistribution and use in source and binary forms are permitted provided ! 8: .\" that: (1) source distributions retain this entire copyright notice and ! 9: .\" comment, and (2) distributions including binaries display the following ! 10: .\" acknowledgement: ``This product includes software developed by the ! 11: .\" University of California, Berkeley and its contributors'' in the ! 12: .\" documentation or other materials provided with the distribution and in ! 13: .\" all advertising materials mentioning features or use of this software. ! 14: .\" Neither the name of the University nor the names of its contributors may ! 15: .\" be used to endorse or promote products derived from this software without ! 16: .\" specific prior written permission. ! 17: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED ! 18: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF ! 19: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 20: .\" ! 21: .\" @(#)strcmp.3 5.3 (Berkeley) 6/24/90 ! 22: .\" ! 23: .TH STRCMP 3 "June 24, 1990" ! 24: .UC 4 ! 25: .SH NAME ! 26: strcmp \- compare strings ! 27: .SH SYNOPSIS ! 28: .nf ! 29: .ft B ! 30: #include <string.h> ! 31: ! 32: int ! 33: strcmp(const char *s1, const char *s2); ! 34: ! 35: int ! 36: strncmp(const char *s1, const char *s2, size_t len); ! 37: .ft R ! 38: .fi ! 39: .SH DESCRIPTION ! 40: .B Strcmp ! 41: and ! 42: .B strncmp ! 43: compare null-terminated strings ! 44: .I s1 ! 45: and ! 46: .I s2 ! 47: and return an integer greater than, equal to, or less than 0, ! 48: according as ! 49: .I s1 ! 50: is lexicographically greater than, equal to, or less than ! 51: .IR s2 . ! 52: The comparison is done using unsigned characters, so that '\e200' ! 53: is greater than '\e0'. ! 54: .PP ! 55: .I Strncmp ! 56: compares at most ! 57: .I len ! 58: characters. ! 59: .SH SEE ALSO ! 60: bcmp(3), memcmp(3), strcasecmp(3), strcoll(3), strxfrm(3) ! 61: .SH STANDARDS ! 62: .B Strcmp ! 63: and ! 64: .B strncmp ! 65: conform to ANSI X3.159-1989 (``ANSI C'').
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