Case-Sensitive String Comparisons : string compare « string « C++ Tutorial






#include <iostream>
#include <string>

using namespace std;

int main( ){
   string saying1( "this is a test" );
   string saying2( "this is another test" );

   // equivalent of strcmp()
   int result = saying1.compare( saying2 );
   if( result < 0 )
      cout << "\"" << saying1 << "\"\nis less than\n\"" << saying2 << "\"";
   else if( result > 0 )
      cout << "\"" << saying1 << "\"\nis greater than\n\"" << saying2 << "\"";
   else
      cout << "\"" << saying1 << "\"\nis equal to \n\"" << saying2 << "\"";

   // equivalent of strcmp()
   if( saying1 < saying2 )
      cout << "\"" << saying1 << "\"\nis less than\n\""  << saying2 << "\"";
   else if( saying1 > saying2 )
      cout << "\"" << saying1 << "\"\nis greater than\n\"" << saying2 << "\"";
   else
      cout << "\"" << saying1 << "\"\nis equal to\n\"" << saying2 << "\"";
}








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