Is scientific notation safe for integer constants in C?

Question

For a while, I\'ve been representing large powers of 10 in constants using scientific notation, just so I don\'t have to count the zeros. e.g.

#define DELAY_USE         


        

Answer 1

It's really not safe because the compiler will consider it as a floating point number, so the precision is limited to 53 bits instead of 64 bits of integers (long int) for more you can read about the presentation of floating point numbrers

http://en.wikipedia.org/wiki/Floating_point