Question 12 Consider the following function: int is_odd(int number) return (number @ 2) == 1; } What should replace the @ so the function returns 1 when provided an odd number and O when provided an even number? Which three (3) of the following are valid double constants? 0 0.54E O 3.542.9 O 3.54E+04 3.54e-02 O e3.54 3.54 Question 17 The following code fragment double vall - 1.2e-234; double val2 = 5.2e-140; printf("%e ", vall); printf("%e ", val2); printf("%e ", vall * val2); displays 1.200000e-234 5.200000e-140 0.000000e-00 This is an example of - Modulo arithmetic Arithmetic Underflow Arithmetic Overflow Integer division