Character Assignment
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Consider the following example, in which the while loop scans a string, copying all characters except 'X' into another string:
while( *sz2 )
{
if( *sz2 != 'X' )
*sz1++ = *sz2++;
else
sz2++;
}
The code copies the byte at sz2 to the location pointed to by sz1, then increments sz1 to receive the next byte. But if the next character in sz2 is a double-byte character, the assignment to sz1 copies only the first byte. The following code uses a portable function to copy the character safely and another to increment sz1 and sz2 correctly:
while( *sz2 )
{
if( *sz2 != 'X' )
{
_mbscpy_s( sz1, 1, sz2 );
sz1 = _mbsinc( sz1 );
sz2 = _mbsinc( sz2 );
}
else
sz2 = _mbsinc( sz2 );
}