This code is from MSDN (http://msdn.microsoft.com/en-us/library/6t4fe76c(v=VS.80).aspx).
#include <string.h>
class String {
public:
String( char *ch ); // Declare constructor
~String(); // and destructor.
private:
char *_text;
size_t sizeOfText;
};
// Define the constructor.
String::String( char *ch ) {
sizeOfText = strlen( ch ) + 1;
// Dynamically allocate the correct amount of memory.
_text = new char[ sizeOfText ];
// If the allocation succeeds, copy the initialization string.
if( _text )
strcpy_s( _text, sizeOfText, ch );
}
// Define the destructor.
String::~String() {
// Deallocate the memory that was previously reserved
// for this string.
if (_text)
delete[] _text;
}
int main() {
String str("The piper in the glen...");
}Why the size of the dynamic array (_text) should be one unit more than "ch"?
sizeOfText = strlen( ch ) + 1;
_text = new char[ sizeOfText ];
strcpy_s( _text, sizeOfText, ch );