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

You want to use user defined literals:

constexpr long long operator "" _k(long long l) {
    return l * 1000;
}

constexpr long long operator "" _m(long long l) {
    return l * 1000 * 1000;
}

then you can simple do:

long long delay = 1_m;
long long wait = 45_k;