Check whether you passed an exam

checkMarks.cpp

#include <iostream>
#include <string>

using std::cin;
using std::cout;
using std::endl;
using std::string;

static unsigned short readMarks(string const & prompt)
{
	unsigned short marks;
	cout << prompt;
	cin >> marks;
	return marks;
}

static unsigned short readMarks()
{
	return readMarks("Enter your marks: ");
}

static bool hasPassed(unsigned short marks, unsigned short failureThreshold)
{
	return marks > failureThreshold;
}

static bool hasPassed(unsigned short marks)
{
	return hasPassed(marks, 40);
}

static void printResult(bool passed)
{
	cout << "You " << (passed ? "passed" : "failed") << " the exam." << endl;
}

int main()
{
	printResult(hasPassed(readMarks()));
	return 0;
}