Copy constructor format is classname (const classname & object) {// do something}
The following program can explain the problem, why the copy constructor is necessary
Class Samp {Char * S; Int Num; Public: SAMP (INT I) {s = '/ 0'; Num = i; cout << Num << endl;}
// Copy constructor SAMP (SAMP & OBL) {INT L = Strlen (obl.s); s = new char [l 1]; strcpy (s, obl.s);}
SAMP () {}
~ SAMP () {if (s) delete [] s; cout << "freeing s [" << Num << "] << endl;}
Void show () {cout << S << "/ n";}
Void Set (Char * STR);
Void Samp :: SET (CHAR * STR) {s = new char [strlen (str) 1]; if (! s) {cout << "allocation error./n"; exit (1);} strcpy (s , STR);
Void main (void) {samp ob; obshow (); return 0;}
