Re: Basic c question ==> atol

[Simon Coulter <shc@xxxxxxxxxxxxxxxxx>]

On 30/01/2010, at 10:20 AM, hockchai Lim wrote:

> printf("num = %017u\n", num);      // the result num =  
> 00000000000000001

First you declared num as signed but here you're saying it's unsigned.

The real problem is that you need to tell printf() to expect a long  
long. Your code is telling printf() to read only the first 4 bytes of  
the long long value. What do you suppose that might contain?

Fixing both your defects gives:

	printf("num = %017lld\n", num);


Regards,
Simon Coulter.
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