#include <cstdlib>
ldiv_t ldiv( long numerator, long denominator );

Testing: adiv_t, div_t,
ldiv_t.

The ldiv() function returns the quotient and remainder of the
operation numerator / denominator. The
ldiv_t structure is defined in cstdlib and has at
least:

long quot; // the quotient
long rem; // the remainder