Thread: More Questions??

I'm writing a program that will ask the user to input a decimal number, convert it to hex, do some simple math and compare the answer with the original input (converted to hex). 2 questions:

1. Do I have to use a string to use hex?
2. How do I compare 2 hex numbers or 2 strings. I setup the program such that hex numbers would be integers so of course it doesn't work. Any help would be great.

Thanks, 2a is way easier than what i was trying to do.

Keep getting RUNTIME ERROR CHECK FAILURE: stack around variable raid6 is corupt. Here is the peice of code:

Code:

/* First we must determine if we are using a RAID-6 device*/
		
		printf("Is this a RAID-6 device Y/N: ");
		scanf ("%s", &raid6);
		getchar();

	/*if yes or no is not entered we get stuck in this loop*/

		while (raid6 != 'Y' && raid6 != 'N' && raid6 != 'y' && raid6 != 'n')
		{
			printf ("Invalid input, please enter Y/N: ");
			scanf ("%s", &raid6);
			getchar();
		}

I always have problems with the scanf buffer yet I continue to use it. Is there a way to clear this in between steps?

If raid6 is a character variable, then your scanf is woefully broken, since %s is not for characters. If raid6 is a character array, then &raid6 is not what you want.

1. sscanf might as well read too many characters, use "%c"
2. In every case it will append a NUL at the end of the array. If you enter a letter, the NUL will go past the array, invalidating memory.

I got it to work, thanks guys!