Tests whether a character is not the end-of-file (EOF) character or is the EOF.
static int_type not_eof(
const int_type& _Ch
);
Parameters
- _Ch
The character represented as an int_type to be tested for whether it is the EOF character or not.
Return Value
The int_type representation of the character tested, if the int_type of the character is not equal to that of the EOF character.
If the character int_type value is equal to the EOF int_type value, then false.
Example
// char_traits_not_eof.cpp
// compile with: /EHsc
#include <string>
#include <iostream>
int main( ) {
using namespace std;
char_traits<char>::char_type ch1 = 'x';
char_traits<char>::int_type int1;
int1 = char_traits<char>:: to_int_type ( ch1 );
cout << "The char_type ch1 is " << ch1
<< " corresponding to int_type: "
<< int1 << "." << endl;
// EOF member function
char_traits <char>::int_type int2 = char_traits<char>::eof ( );
cout << "The eofReturn is: " << int2 << endl;
// Testing for EOF or another character
char_traits <char>::int_type eofTest1, eofTest2;
eofTest1 = char_traits<char>::not_eof ( int1 );
if ( !eofTest1 )
cout << "The eofTest1 indicates ch1 is an EOF character."
<< endl;
else
cout << "The eofTest1 returns: " << eofTest1
<< ", which is the character: "
<< char_traits<char>::to_char_type ( eofTest1 )
<< "." << endl;
eofTest2 = char_traits<char>::not_eof ( int2 );
if ( !eofTest2 )
cout << "The eofTest2 indicates int2 is an EOF character."
<< endl;
else
cout << "The eofTest1 returns: " << eofTest2
<< ", which is the character: "
<< char_traits<char>::to_char_type ( eofTest2 )
<< "." << endl;
}
The char_type ch1 is x corresponding to int_type: 120. The eofReturn is: -1 The eofTest1 returns: 120, which is the character: x. The eofTest2 indicates int2 is an EOF character.
Requirements
Header: <string>
Namespace: std