Use string.compare to compare two strings : string compare « string « C++ Tutorial

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C++ Tutorial » string » string compare

15.7.6.Use string.compare to compare two strings

#include <iostream>

using std::cout;

using std::endl;



#include <string>

using std::string;



int main()

{

   string string1( "AAAAAAAAAAAAAA" );

   string string2( "BBBBBBBBBBBBBB" ); 

   string string3( "CCCCCCCCCCCCCC" );

   string string4( string2 );

   

   cout << "string1: " << string1 << "\nstring2: " << string2

      << "\nstring3: " << string3 << "\nstring4: " << string4 << "\n\n";





   // comparing string1 and string2

   int result = string1.compare( string2 );



   if ( result == 0 )

      cout << "string1.compare( string2 ) == 0\n";

   else {

      if ( result > 0 )

         cout << "string1.compare( string2 ) > 0\n";

      else

         cout << "string1.compare( string2 ) < 0\n";

   } 

   return 0;

}

string1: AAAAAAAAAAAAAA
string2: BBBBBBBBBBBBBB
string3: CCCCCCCCCCCCCC
string4: BBBBBBBBBBBBBB

string1.compare( string2 ) < 0

15.7.string compare
	15.7.1.	String: equals
	15.7.2.	string overloaded equality and relational operators
	15.7.3.	Compare string ignoring the case
	15.7.4.	Compare sub string: string4.compare( 0, string2.length(), string2 )
	15.7.5.	Use == > and < to compare strings
	15.7.6.	Use string.compare to compare two strings
	15.7.7.	Compare strings by index: string1.compare( 2, 5, string3, 0, 5)
	15.7.8.	Set with functor for string comparison
	15.7.9.	Case-Sensitive Substring Comparison: equivalent of strncmp()
	15.7.10.	Case-Sensitive Substring Comparison: generalization of strncmp()
	15.7.11.	Case-Sensitive String Comparisons
	15.7.12.	Use std::lexicographical_compare to compare two char arrays

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