Comparing fractions X00639
Write a function
bool c_frac(int n1, int d1, int n2, int d2);
that returns true whenever the fraction n1/d1 is strictly smaller than the fraction n2/d2.
Precondition
d1, d2 > 0.
Observation You only need to submit the required procedure; your main program will be ignored.
Public test cases
Input/Output
c_frac(0, 3, 0, 3) → no
c_frac(1, 7, 2, 7) → yes
c_frac(2, 7, 1, 7) → no
c_frac(-1, 7, 2, 7) → yes
c_frac(2, 7, -1, 7) → no
c_frac(-630, 723, 510, 423) → yes
c_frac(1, 7, 2, 7) → yes
c_frac(2, 7, 1, 7) → no
c_frac(-1, 7, 2, 7) → yes
c_frac(2, 7, -1, 7) → no
c_frac(-630, 723, 510, 423) → yes