Bad Input (C++)

You can cin a string, and then check if the length is more than one. Otherwise proceed as planned.

...err... I'm still not sure what you mean. (Did I got it correct?) Pls clarify more.

[edited by - DerekSaw on January 24, 2003 4:41:33 AM]

That''s the right idea, but i''m sure there''s a better way than having cin a string. It seems like a waste of memory if there is a better way

After the read...

if(!std::cin)
{
   // User is a moron
}
else
{
   // User isn''t quite a moron
}
 

You get the picture

Just to expand on what Zipster was saying, the user being a moron puts the stream into a "fail" state which needs to be cleared before input can continue. check out the iostream documentation for more details. Zipster''s code invokes the implicit void* conversion operator on cin, which returns NULL if the stream is in a fail state.

---

Don''t listen to me. I''ve had too much coffee.

#include "conio.h"

void main() //Or whatever your functions called
{
int myInput = getch();//Reads one character from the keyboard
//Now myInput holds the ASCII code for that character
if (myInput==13) //ASCII-value 13 which means [ENTER]
//[do_something]
}