Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
std::strcmp(3)		      C++ Standard Libary		std::strcmp(3)

NAME
       std::strcmp - std::strcmp

Synopsis
	  Defined in header <cstring>
	  int strcmp( const char *lhs, const char *rhs );

	  Compares two null-terminated byte strings lexicographically.

	  The  sign  of	 the  result is	the sign of the	difference between the
       values of the first
	  pair of characters (both interpreted as unsigned char)  that	differ
       in the strings
	  being	compared.

	  The  behavior	 is  undefined if lhs or rhs are not pointers to null-
       terminated strings.

Parameters
	  lhs, rhs - pointers to the null-terminated byte strings to compare

Return value
	  Negative value if lhs	appears	before rhs in lexicographical order.

	  Zero if lhs and rhs compare equal.

	  Positive value if lhs	appears	after rhs in lexicographical order.

Example
       // Run this code

	#include <vector>
	#include <cstring>
	#include <algorithm>
	#include <iostream>

	int main()
	{
	    std::vector<const  char*>	cats   {"Heathcliff",	"Snagglepuss",
       "Hobbes", "Garfield"};
	    std::sort(cats.begin(),  cats.end(),  [](const  char  *strA, const
       char *strB) {
		return std::strcmp(strA, strB) < 0;
	    });

	    for	(const char *cat : cats) {
		std::cout << cat << '\n';
	    }
	}

Output:
	Garfield
	Heathcliff
	Hobbes
	Snagglepuss

See also
	  strncmp compares a certain number of characters from two strings
		  (function)
	  wcscmp  compares two wide strings
		  (function)
	  memcmp  compares two buffers
		  (function)
	  strcoll compares two strings in accordance to	the current locale
		  (function)

http://cppreference.com		  2022.07.31			std::strcmp(3)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=std::strcmp&sektion=3&manpath=FreeBSD+Ports+15.0>

home | help