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Salem, are you on a 64bit system?

Bug 6453 – scanf integer overflow handling different between 32bit and 64bit

Bye, Andreas

Interesting. When I run your code I get:


$ ./foo
2147483647
9223372036854775807
Enter number: 2147483648
Number out of range, try again: Numerical result out of range
Enter number:...

You're right. I haven't read the man-page carefully enough:


So ERANGE for sscanf() only works with the GNU C Library.

Bye, Andreas

My code is tolerant and accepts a number if the input starts with it and discards any following characters.
If you only want "clean" numbers (nothing before and after) I suggest a combination of...

Have you ever heard of the KISS principle?

A simple do-while-loop is all you need:


#include <stdio.h>
#include <stdlib.h>

int main()
{