Qn1: You are asked to write a simple C program that will accept an integer value in the range of 5-95 and as a multiple of 5 representing the number of cents to give to a customer in their change. The program should calculate how many coins of each denomination and display this to the user. Valid coin values are 50, 20, 10 and 5. Your solution (program and algorithm) should be modular in nature. This requires the submission of a high-level algorithm and suitable decompositions of each step. Note that for this problem the principle of code reuse is particularly important and a significant number of marks are allocated to this. You should attempt to design your solution such that it consists of a relatively small number of functions that are as general in design as possible and you should have one function in particular that can be reused (called repeatedly) in order to solve the majority of the problem. If you find that you have developed a large number of functions which each performs a similar task (or have a lot of repeated code) then attempt to analyse your design to generalise the logic so that it may be reused.
Max Function
Statistical function is of many categories. One of them is a MAX function. The MAX function returns the largest value from the list of arguments passed to it. MAX function always ignores the empty cells when performing the calculation.
Power Function
A power function is a type of single-term function. Its definition states that it is a variable containing a base value raised to a constant value acting as an exponent. This variable may also have a coefficient. For instance, the area of a circle can be given as:
Qn1:
You are asked to write a simple C program that will accept an integer value in the range
of 5-95 and as a multiple of 5 representing the number of cents to give to a customer in
their change. The program should calculate how many coins of each denomination and
display this to the user. Valid coin values are 50, 20, 10 and 5. Your solution (program
and
algorithm and suitable decompositions of each step.
Note that for this problem the principle of code reuse is particularly important and a
significant number of marks are allocated to this. You should attempt to design your
solution such that it consists of a relatively small number of functions that are as general
in design as possible and you should have one function in particular that can be reused
(called repeatedly) in order to solve the majority of the problem. If you find that you
have developed a large number of functions which each performs a similar task (or have
a lot of repeated code) then attempt to analyse your design to generalise the logic so
that it may be reused.
Q2 :
You are to extend your solution to Question 2 above by allowing the user to enter the
amount of change as dollars and cents as a double (real number). Valid dollar values
are 100, 50, 20, 10, 5, 2 and 1. You program should output the correct combination of
dollar and cent denominations required and should be able to work for any valid dollar
amounts. Cents amounts may be should be multiples of 5 as in the previous question.
In this question you will need to explicitly convert a double to an integer to break the
inputted double down to its component parts as integers. You can use the following
code as the basis for doing this:
float change;
int dollar, cents;
...
dollar = (int) change;
cents = (int) (((change – dollar)*100) + 0.5);
Again your solution for this problem should be modular.
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