Common.h

#ifndef Common_Included
#define Common_Included

#include <string>

/**
 * Given a number, returns a version of that number with commas separating the digits.
 *
 * @param number The number in question
 * @return The number with commas added.
 */
std::string addCommasTo(int number);

/* Given a quantity, returns a string of that quantity plus an appropriately-pluralized
 * version of what it is.
 */
template <typename ValueType>
std::string pluralize(const ValueType& value, const std::string& singular, const std::string& plural) {
    return std::to_string(value) + " " + (value == 1? singular : plural);
}

/* Assume we suffix with s to pluralize unless specified otherwise. */
template <typename ValueType>
std::string pluralize(const ValueType& value, const std::string& singular) {
    return pluralize(value, singular, singular + "s");
}

#endif