[ashali19]

Dear Experts,


I have to demonstrate my understanding on buffer overrun by writing a code that has buffer overrun.I also have to choose a C++ function other than strcpy.I have to write a C++ program that prints out the balance of deposits of a customer( 3 cutomers).Their balances are hard coded in the program.Each customer has a password and associated salt code which is also hard coded.The program checks only the first eight characters of a password input; namely, check the following equality for access control:

StoredSalt||StoredPassword = StoredSalt||EnteredPassword

The intended usage and output are as follows:



bank Customer_Name Password



A sample run (not real):



C:\> bank Alice Alice123

The balance for Alice is $1234



Address of update = 00401328



77C5ACA0

77C3E6AD

77F944A8

00000007

003D2BC8

. . .


There is a function named “update” in the program. It adds $2000 to the balance so that the printout can be the sum of the balance: $2000 + the-hard-coded-balance. The buffer problem in the code allows a customer to illegally invoke this function.Can someone help me on this?

[King Coder]

Can someone help me on this?

Please show effort when posting homework problems. I nor anyone here will do your homework for you. SHOW EFFORT!

[ashali19]

Dear expert,


i am sorry for the help i have asked.i have put in effort and was able to do the program in c.However i need to use c++ to do the functions.

Right now i am printing the address in C such that:

printf("\nMy stack looks like:\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\ n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n% p\n%p\n%p\n");

The above will print the addresses.I need to use C++ to do display the addresses.

cout<<"address arguments";

i have used #include<iostream> but it does not work???is there some other sytax i should use??

rgds

[King Coder]

Originally Posted by ashali19

Dear expert,


i am sorry for the help i have asked.i have put in effort and was able to do the program in c.However i need to use c++ to do the functions.

Right now i am printing the address in C such that:

printf("\nMy stack looks like:\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\ n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n% p\n%p\n%p\n");

The above will print the addresses.I need to use C++ to do display the addresses.

cout<<"address arguments";

i have used #include<iostream> but it does not work???is there some other sytax i should use??

rgds

cout is right, but I'm not sure what you're wanting with this portion of code:

Code:

printf("\nMy stack looks like:\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n%p\n");

Are you just wanting to print the address of the stack? If so, the '&' can give you the address. For instance:

Code:

int b = 5;
cout << &b << endl;

Will print the address of b

printf will work just as good.