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char_traits::move

Copies a specified number of characters in a sequence to another, possibly overlapping sequence.

This method is potentially unsafe, as it relies on the caller to check that the passed values are correct. Consider using char_traits::_Move_s instead.

static char_type *move( 
   char_type* _To,  
   const char_type* _From,  
   size_t _Num  
);

_To

The element at the beginning of the string or character array targeted to receive the copied sequence of characters.

_From

The element at the beginning of the source string or character array to be copied.

_Num

The number of elements to be copied from the source string.

The first element _To copied into the string or character array targeted to receive the copied sequence of characters.

The source and destination may overlap.

// char_traits_move.cpp
// compile with: /EHsc /W3
#include <string>
#include <iostream>

int main( )
{
   using namespace std;

   char_traits<char>::char_type sFrom1[] =  "abcd-1234-abcd";
   char_traits<char>::char_type sTo1[] =  "ABCD-1234";
   char_traits<char>::char_type* result1;
   cout << "The source string sFrom1 is: " << sFrom1 << endl;
   cout << "The destination stringsTo1 is: " << sTo1 << endl;
   // Note: char_traits::move is potentially unsafe, consider
   // using char_traits::_Move_s instead.
   result1 = char_traits<char>::move ( sTo1 ,  sFrom1 , 4 );  // C4996
   cout << "The result1 = move ( sTo1 , sFrom1 , 4 ) is: "
        << result1 << endl << endl;

   // When source and destination overlap
   char_traits<char>::char_type sToFrom2[] = "abcd-1234-ABCD";
   char_traits<char>::char_type* result2;
   cout << "The source/destination string sToFrom2 is: "
        << sToFrom2 << endl;
   const char* findc = char_traits<char>::find ( sToFrom2 , 4 , 'c' );
   // Note: char_traits::move is potentially unsafe, consider
   // using char_traits::_Move_s instead.
   result2 = char_traits<char>::move ( sToFrom2 , findc , 8 );  // C4996
   cout << "The result2 = move ( sToFrom2 , findc , 8 ) is: "
        << result2 << endl;
}
The source string sFrom1 is: abcd-1234-abcd The destination stringsTo1 is: ABCD-1234 The result1 = move ( sTo1 , sFrom1 , 4 ) is: abcd-1234 The source/destination string sToFrom2 is: abcd-1234-ABCD The result2 = move ( sToFrom2 , findc , 8 ) is: cd-1234-4-ABCD

Header: <string>

Namespace: std

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