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vijayan121 1,152 Posting Virtuoso
WesFox13 0 Light Poster
I need help in order to make the code work
///
///
///
///
///
/// Program: Weather data processing
/// Created by: Wesley Montgomery
/// This program anlizes weather data accessed from a file and finds the average of Temperature, Humidity, and other facts.
///
///
///
#include <fstream>
#include <iostream>
#include <string>
#include <cmath>
#include <stdlib.h>
#include <algorithm> // for min() and max()
#include <sstream>
#include <iomanip>
using namespace std;
void read_file(
ifstream& file, // The open and ready-to-read csv data file
string targetdate, // The date we are interested in (see note below)
int temp, // The index of the field we are interested in
int pressure, // The index of the field we are interested in
int humidity, // The index of the field we are interested in
double& temp_min, // Where to put the minimum of the indexed field
double& temp_max, // Where to put the maximum
double& pres_min, // Where to put the minimum of the indexed field
double& pres_max, // Where to put the maximum
double& humi_min, // Where to put the minimum of the indexed field
double& humi_max // Where to put the maximum
);
void read_filewindmax(
ifstream& file, // The open and ready-to-read csv data file
string targetdate, // The date we are interested in (see note below)
int wind, // The index of the field we are interested in
double& wind_max // Where to put the maximum
);
void get_dates( ifstream& file, string dates[], int& size );
int main()
{
int pressure, temp, windspeed, humidity, rainfall, min_temp, max_temp, min_pres, max_pres, min_humi, max_humi, wind_max;
bool done; // exit flag
char selection; //Menu Selection
string file; // Name of datafile
ifstream weatherfile; //datafile stream
// Initialize exit flag
done = false;
while (!done)
{
// Output menu list
cout << "\n\n";
cout << "************************\n\n";
cout << " Weather Data Analysis: \n";
cout << " 1) Select Data File to be loaded\n";
cout << " 2) Daily Min/max of Temp,Pressure and humidity\n";
cout << " 3) Daily Max Wind Speed\n";
cout << " 4) Avg Pressure, Humidity, and Windspeed for rainy days\n";
cout << " 5) \n";
cout << " 6) Exit Program\n";
cout << "************************\n\n";
// Input data
cout << "Selection -> ";
cin >> selection;
cout << "\n\n";
// Process input
if (selection=='1')
{
cout << "Insert Data file:";
cin >> file;
weatherfile.open (file.c_str(), ios::in);
cout << "\n\n";
}
else if (selection=='2')
{
while (!weatherfile.eof())
{
string targetdate = "04/18/2008"; // whatever the target day is
read_file( weatherfile, targetdate, temp, pressure, humidity, min_temp, max_temp, min_humi, max_humi, min_pres, max_pres);
cout << targetdate << ": ";
cout << "The Minimum Temperature is" << setw(10) << setprecision(2) << min_temp << "degrees." << endl;
cout << "The Maximum Temperature is" << setw(10) << setprecision(2) << max_temp << "degrees." << endl;
cout << "The Minimum Pressure is" << setw(10) << setprecision(2) << min_pres << "millibars." << endl;
cout << "The Maximum Pressure is" << setw(10) << setprecision(2) << max_pres << "millibars." << endl;
cout << "The Minimum Humidity is" << setw(10) << setprecision(2) << min_humi << endl;
cout << "The Maximum Humidity is" << setw(10) << setprecision(2) << max_humi << endl;
}
weatherfile.clear();
weatherfile.seekg( 0 );
}
else if (selection=='3')
{
while (!weatherfile.eof())
{
string targetdate = "04/18/2008"; // whatever the target day is
read_filewindmax(weatherfile, targetdate, windspeed, wind_max);
cout << targetdate << ": ";
cout << "The Maximum Wind Speed is" << setw(10) << setprecision(2) << wind_max << "miles per hour." << endl;
}
weatherfile.clear();
weatherfile.seekg( 0 );
}
else if (selection=='4')
{
while (!weatherfile.eof())
{
if (rainfall > 0)
{
}
}
weatherfile.clear();
weatherfile.seekg( 0 );
}
else if (selection=='5')
{
while (!weatherfile.eof())
{
}
weatherfile.clear();
weatherfile.seekg( 0 );
}
else if (selection=='6')
{
cout << "Goodbye. Thank you for using my program.\n\n";
done = true; // flag for exit
}
else
{
cout << "** Invalid Selection. **\n\n";
}
weatherfile.close();
} // end of while loop
return (0);
}the Same errors occur as last time. I really need help with this code.
VernonDozier 2,218 Posting Expert Featured Poster
These variables are integers:
int pressure, temp, windspeed, humidity, rainfall, min_temp, max_temp, min_pres, max_pres, min_humi, max_humi, wind_max;Here is your function call:
read_file( weatherfile, targetdate, temp, pressure, humidity, min_temp, max_temp, min_humi, max_humi, min_pres, max_pres);Here is your function declaration:
void read_file(
ifstream& file, // The open and ready-to-read csv data file
string targetdate, // The date we are interested in (see note below)
int temp, // The index of the field we are interested in
int pressure, // The index of the field we are interested in
int humidity, // The index of the field we are interested in
double& temp_min, // Where to put the minimum of the indexed field
double& temp_max, // Where to put the maximum
double& pres_min, // Where to put the minimum of the indexed field
double& pres_max, // Where to put the maximum
double& humi_min, // Where to put the minimum of the indexed field
double& humi_max // Where to put the maximum
);It is expecting you to pass it doubles for the last six variables.
See red variable highlighting. You are passing integers to a function that expects doubles. Decide whether the function should take doubles or integers. If it should take doubles, declare the variables as doubles. If it should take integers, change the function so it takes integers, not doubles. They need to match.
WesFox13 0 Light Poster
Ok I did what you said but now I'm getting a LNK1120 error
///
///
///
///
///
/// Program: Weather data processing
/// Created by: Wesley Montgomery
/// This program anlizes weather data accessed from a file and finds the average of Temperature, Humidity, and other facts.
///
///
///
#include <fstream>
#include <iostream>
#include <string>
#include <cmath>
#include <stdlib.h>
#include <algorithm> // for min() and max()
#include <sstream>
#include <iomanip>
using namespace std;
void read_file(
ifstream& file, // The open and ready-to-read csv data file
string targetdate, // The date we are interested in (see note below)
int temp, // The index of the field we are interested in
int pressure, // The index of the field we are interested in
int humidity, // The index of the field we are interested in
int temp_min, // Where to put the minimum of the indexed field
int temp_max, // Where to put the maximum
int pres_min, // Where to put the minimum of the indexed field
int pres_max, // Where to put the maximum
int humi_min, // Where to put the minimum of the indexed field
int humi_max // Where to put the maximum
);
void read_filewindmax(
ifstream& file, // The open and ready-to-read csv data file
string targetdate, // The date we are interested in (see note below)
int wind, // The index of the field we are interested in
int wind_max // Where to put the maximum
);
void get_dates( ifstream& file, string dates[], int& size );
int main()
{
int rainfall, temp, pressure, humidity, windspeed, wind_max, min_temp, max_temp, min_humi, max_humi, min_pres, max_pres ;
bool done; // exit flag
char selection; //Menu Selection
string file; // Name of datafile
ifstream weatherfile; //datafile stream
// Initialize exit flag
done = false;
while (!done)
{
// Output menu list
cout << "\n\n";
cout << "************************\n\n";
cout << " Weather Data Analysis: \n";
cout << " 1) Select Data File to be loaded\n";
cout << " 2) Daily Min/max of Temp,Pressure and humidity\n";
cout << " 3) Daily Max Wind Speed\n";
cout << " 4) Avg Pressure, Humidity, and Windspeed for rainy days\n";
cout << " 5) \n";
cout << " 6) Exit Program\n";
cout << "************************\n\n";
// Input data
cout << "Selection -> ";
cin >> selection;
cout << "\n\n";
// Process input
if (selection=='1')
{
cout << "Insert Data file:";
cin >> file;
weatherfile.open (file.c_str(), ios::in);
cout << "\n\n";
}
else if (selection=='2')
{
while (!weatherfile.eof())
{
string targetdate = "04/18/2008"; // whatever the target day is
read_file( weatherfile, targetdate, temp, pressure, humidity, min_temp, max_temp, min_humi, max_humi, min_pres, max_pres);
cout << targetdate << ": ";
cout << "The Minimum Temperature is" << setw(10) << setprecision(2) << min_temp << "degrees." << endl;
cout << "The Maximum Temperature is" << setw(10) << setprecision(2) << max_temp << "degrees." << endl;
cout << "The Minimum Pressure is" << setw(10) << setprecision(2) << min_pres << "millibars." << endl;
cout << "The Maximum Pressure is" << setw(10) << setprecision(2) << max_pres << "millibars." << endl;
cout << "The Minimum Humidity is" << setw(10) << setprecision(2) << min_humi << endl;
cout << "The Maximum Humidity is" << setw(10) << setprecision(2) << max_humi << endl;
}
weatherfile.clear();
weatherfile.seekg( 0 );
}
else if (selection=='3')
{
while (!weatherfile.eof())
{
string targetdate = "04/18/2008"; // whatever the target day is
read_filewindmax(weatherfile, targetdate, windspeed, wind_max);
cout << targetdate << ": ";
cout << "The Maximum Wind Speed is" << setw(10) << setprecision(2) << wind_max << "miles per hour." << endl;
}
weatherfile.clear();
weatherfile.seekg( 0 );
}
else if (selection=='4')
{
while (!weatherfile.eof())
{
if (rainfall > 0)
{
}
}
weatherfile.clear();
weatherfile.seekg( 0 );
}
else if (selection=='5')
{
while (!weatherfile.eof())
{
}
weatherfile.clear();
weatherfile.seekg( 0 );
}
else if (selection=='6')
{
cout << "Goodbye. Thank you for using my program.\n\n";
done = true; // flag for exit
}
else
{
cout << "** Invalid Selection. **\n\n";
}
weatherfile.close();
} // end of while loop
return (0);
}Anything you see wrong?
VernonDozier 2,218 Posting Expert Featured Poster
Ok I did what you said but now I'm getting a LNK1120 error
Anything you see wrong?
Read my earlier posts. That's the linker error I was referring to. You haven't written the function yet, so you can't call it.
WesFox13 0 Light Poster
Ok I'm going to be honest, I have no idea what the heck I'm doing. I don't know how to fix this and I need help to do this program.
joshmo 8 Posting Whiz in Training
read_file( weatherfile, targetdate, temp, pressure, humidity, min_temp, max_temp, min_humi, max_humi, min_pres, max_pres);the function is not defined...you declared it but there is nothing in it..hence when you call there is nothing to call
VernonDozier 2,218 Posting Expert Featured Poster
Stick this at the end of your program:
void read_file( ifstream& file, string targetdate, int temp, int pressure, int humidity, int temp_min, int temp_max, int pres_min, int pres_max, int humi_min, int humi_max)
{
// put function code here
}See if that compiles. It won't do what you want it to when you run it, but see if that gets it to compile. Also go back to Duoas's post 17 when he originally suggested this function. Notice the & in his code. You've taken them out. You need to put them back in. You want to pass these variables by reference.
Duoas 1,025 Postaholic Featured Poster
It seems like you are having some trouble with functions.
You might want to take a look through the Functions I and II parts of this C++ Language Tutorial on cplusplus.com. It is very complete and easy to read. You'll need to understand this stuff to finish your assignment with top grade.
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