Weather program using Array of Structure and file IO in C++
#include <iostream>
#include <iomanip>
#include <cmath>
#include#include<fstream>
#include#include<string.h>
#include#include<stdlib.h>
using namespace std;
struct Weather
{
double tempF;
double windSpeed;
double dewPoint;
double windChill;
double cloudBase;
};
int i = 0;
void get_input(Weather calculation[]);
void get_windChill(Weather* calculation );
void get_cloudBase(Weather* calculation);
void show_output(Weather calculation[]);
int main()
{
Weather calculation[20];
get_input(calculation); //input from file
show_output(calculation);
return 0;
}
void show_output(Weather calculation[])
{
cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(1);
cout << endl;
cout << " Temperature Wind Speed Dew Point Wind Chill Cloud Base"< 3))
cout<< std::right << std::setw(10) << calculation[j].tempF<< " dF"<< std::setw(10)
<3 mp h to compute wind chill.";
}
void get_input(Weather *ptr)
{
cout << endl;
cout << " _______________________________________________________________" << endl;
cout << " | |" << endl;
cout << " | This program determines wind chill using temperature |" << endl;
cout << " | In Fahrenheit and wind speed in mph, and computes |" << endl;
cout << " | The cloud base using the dew point in Fahrenheit |" << endl;
cout << " |______________________________________________________________ " << endl;
ifstream obj("weatherData.txt");
if(obj)
{
string value;
double tempF=0;
double windSpeed=0;
double dewPoint=0;
while(getline(obj, value)){
tempF = atof(value.c_str());
ptr->tempF = tempF;
value.clear();
getline(obj, value);
windSpeed = atof(value.c_str());
ptr->windSpeed = windSpeed;
value.clear();
getline(obj, value);
dewPoint = atof(value.c_str());
ptr->dewPoint = dewPoint;
tempF=0;
windSpeed=0;
dewPoint=0;
value.clear();
get_windChill(ptr);
get_cloudBase(ptr);
ptr++;
i++;
}
}
else
{
cout<<"\n Error : Unable to open `weatherData.txt` file";
}
}
void get_windChill(Weather *calculation )
{
double windChill = 0.0;
windChill = 35.74 + (0.6215 * calculation->tempF)- (35.75 * (pow(calculation->windSpeed,0.16))) +
((0.4275 * calculation->tempF)* (pow(calculation->windSpeed,0.16)));
calculation->windChill= windChill;
}
void get_cloudBase(Weather* calculation)
{
double cloudBase = 0.0;
cloudBase =((calculation->tempF - calculation->dewPoint)/4.4*1000);
calculation->cloudBase=cloudBase;
}
