Question

C++ Assignment.

Design the Weather class that contains the following members:

Data members to store:

- a day (an integer)

- a month (an integer)

- a year (an integer)

- a temperature (a float)

- a static data member that stores the total of all temperatures (a float)

Member functions:

- a constructor function that obtains a day, month, year and temperature from the user. This function should also accumulate/calculate the total of all temperatures (i.e., add the newly entered temperature to the total).

- a static function that computes and displays the day which has the lowest temperature. Note: An array of Weather objects and the size of the array will be passed to this function.

- a static function that computes and displays the average temperature. This function should use a parameter, if necessary.

Design the main( ) function, which instantiates/creates any number of objects of the Weather class as requested by the user (i.e., creates a dynamic array of Weather objects). main( ) should also call appropriate functions to compute and display the day that has the lowest temperature, as well as the average temperature. Your program should include all necessary error checking.

A sample run of this program could be as follows:

How many days => 4

Enter day, month, year, temperature => 29 11 2018 15.6

Enter day, month, year, temperature => 30 11 2018 8.7

Enter day, month, year, temperature => 1 12 2018 3.1

Enter day, month, year, temperature => 2 12 2018 3.5

Lowest temperature = 3.1 C, Day 1/12/2018

Average temperature = 7.7 C

Answer 1

#include <iostream>

#include <iomanip>

#include <vector>

#include <sstream>

using namespace std;

class Weather

{

private:

int day, month, year;

float temperature;

static float totalTemperature;

public:

Weather()

{

int d, m, y;

float temp;

cout << "Enter day, month, year, temperature => ";

cin >> d >> m >> y >> temp;

this->day = d;

this->month = m;

this->year = y;

this->temperature = temp;

totalTemperature += this->temperature;

}

int getDay(){ return this->day; }

int getMonth(){ return this->month; }

int getYear(){ return this->year; }

float getTemperature(){ return this->temperature; }

float getTotalTemperature(){ return totalTemperature; }

string toString()

{

stringstream ss;

ss << this->temperature << " C, Day " << this->day << "/" << this->month << "/" << this->year;

return ss.str();

}

};

float Weather::totalTemperature = 0;

// function prototype

static void findDayWithLowestTemperature(vector<Weather> weathers, int nDays);

static float getAverageTemperature(vector<Weather> weathers, int size);

int main()

{

vector<Weather> weathers;

int nDays;

cout << endl << "How many days => ";

cin >> nDays;

for(int i = 0; i < nDays; i++)

{

Weather w;

weathers.push_back(w);

}

findDayWithLowestTemperature(weathers, nDays);

cout << setprecision(1) << fixed << "Average temperature = " << getAverageTemperature(weathers, nDays) << " C" << endl;

return 0;

}

static void findDayWithLowestTemperature(vector<Weather> weathers, int size)

{

float min = weathers[0].getTemperature();

int minIndex = -1;

for(int i = 0; i < size; i++)

{

if(weathers[i].getTemperature() < min)

{

min = weathers[i].getTemperature();

minIndex = i;

}

}

cout << "Lowest temperature = " << weathers[minIndex].toString() << endl;

}

static float getAverageTemperature(vector<Weather> weathers, int size)

{

float sum = 0.0;

sum += weathers[0].getTotalTemperature();

return (sum / size);

}

**************************************************************** SCREENSHOT ***********************************************************