warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings

Password password = Password("1234");

(deleted)

saisrilekha:
Password password = Password("1234");

and the rest of the program is ...... ?

"1234" is a string constant. The Password constructor expects a char *.

char *myReallyEasyToGuessPassword = "1234";
Password password = Password(myReallyEasyToGuessPassword);