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-termi-
     nated 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 <algorithm>
      #include <cstring>
      #include <iostream>
      #include <vector>

      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)
	C documentation for
	strcmp

http://cppreference.com 	   2024.06.10			  std::strcmp(3)
home | help