Created
November 22, 2023 11:12
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#include <iostream> | |
#include <stdexcept> | |
using namespace std; | |
float calculateSum(unsigned int currentMonth, unsigned int previousMonth, float kwhPrice) { | |
unsigned int delta; | |
if (currentMonth < previousMonth) { | |
delta = (9999 - previousMonth) + currentMonth; | |
} | |
else { | |
delta = currentMonth - previousMonth; | |
} | |
return delta * kwhPrice; | |
} | |
template<typename T> | |
T checkValue(T lowerLimit, T upperLimit, const string& prompt) { | |
T temp; | |
cout << prompt << ": "; | |
cin >> temp; | |
if (cin.fail()) { | |
cin.clear(); | |
throw string("Некорректный тип данных!"); | |
} | |
else if (temp < lowerLimit || temp > upperLimit) { | |
throw string("Некорректное значение! Значение должно быть больше " | |
+ to_string(lowerLimit) | |
+ " и меньше " | |
+ to_string(upperLimit) + "."); | |
} | |
else { | |
return temp; | |
} | |
} | |
int main() { | |
unsigned int previousMonth, currentMonth; | |
float kwhPrice; | |
try { | |
previousMonth = checkValue<unsigned int>(0, 9999, "Предыдущий месяц"); | |
currentMonth = checkValue<unsigned int>(0, 9999, "Текущий месяц"); | |
kwhPrice = checkValue<float>(0, 10000, "Цена за киловатт-час"); | |
const float result = calculateSum(currentMonth, previousMonth, kwhPrice); | |
cout << "Вы заплатите: " << result << endl; | |
} | |
catch (const string& errorMessage) { | |
cout << "Ошибка: " << errorMessage << endl; | |
} | |
return 0; | |
} |
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