char_traits::eq_int_type

Tests whether two characters represented as int_types are equal or not.

static bool eq_int_type(
   const int_type& _Ch1,
   const int_type& _Ch2
);

Parameters

• _Ch1
  The first of the two characters to be tested for equality as int_types.

• _Ch2
  The second of the two characters to be tested for equality as int_types.

Return Value

true if the first character is equal to the second character; otherwise false.

Example

// char_traits_eq_int_type.cpp
// compile with: /EHsc
#include <string>
#include <iostream>

int main( )
{
   using namespace std;

   char_traits<char>::char_type ch1 =  'x';
   char_traits<char>::char_type ch2 =  'y';
   char_traits<char>::char_type ch3 =  'x';

   // Converting from char_type to int_type
   char_traits<char>::int_type int1, int2 , int3;
   int1 =char_traits<char>:: to_int_type ( ch1 );
   int2 =char_traits<char>:: to_int_type ( ch2 );
   int3 =char_traits<char>:: to_int_type ( ch3 );

   cout << "The char_types and corresponding int_types are:"
        << "\n    ch1 = " << ch1 << " corresponding to int1 = "
        << int1 << "."
        << "\n    ch2 = " << ch2 << " corresponding to int1 = "
        << int2 << "."
        << "\n    ch3 = " << ch3 << " corresponding to int1 = "
        << int3 << "." << endl << endl;

   // Testing for equality of int_type representations
   bool b1 = char_traits<char>::eq_int_type ( int1 , int2 );
   if ( b1 )
      cout << "The int_type representation of character ch1\n "
           << "is equal to the int_type representation of ch2."
           << endl;
   else
      cout << "The int_type representation of character ch1\n is "
           << "not equal to the int_type representation of ch2."
           << endl;

   // An equivalent and alternatively test procedure
   if ( int1 == int3 )
      cout << "The int_type representation of character ch1\n "
           << "is equal to the int_type representation of ch3."
           << endl;
   else
      cout << "The int_type representation of character ch1\n is "
           << "not equal to the int_type representation of ch3."
           << endl;
}

The char_types and corresponding int_types are:
    ch1 = x corresponding to int1 = 120.
    ch2 = y corresponding to int1 = 121.
    ch3 = x corresponding to int1 = 120.

The int_type representation of character ch1
 is not equal to the int_type representation of ch2.
The int_type representation of character ch1
 is equal to the int_type representation of ch3.

Requirements

Header: <string>

Namespace: std

See Also

Concepts

char_traits Struct

char_traits Members