I need help with this and quick it's due tonight only question 9

Given a natural number, write a C ++ program that:
1. Displays the sum of even digits and the product of odd digits.
2. check if the first digit is equal to the last digit of n
3. construct the inverse formed only with odd numbers
4. calculate the number of digits 0 contained in n
5. check if n is a power of 10
6. Replace all even digits with an odd number 1 greater than it (next)
7. remove the odd digits from n
8. check that the number has all the digits equal
9. Displays the largest number that can be formed with the distinct digits that it has
contains n (eg for n = 25330727, 75320 will be obtained)

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?