As part of the mission of the CS student you have been commissioned to help clea
ID: 3783054 • Letter: A
Question
As part of the mission of the CS student you have been commissioned to help clean up some of the data recently collected at Aquarena Springs. It turns out the biologists who were collecting water temperatures forgot to agree on which temperature scale to use. Some used Fahrenheit and some used Celsius. The biologists used a thermometer that recorded the time and date of the reading and the temperature. Your job is to create a human readable output file that shows the time and date, as well as the temperature in Celsius. Lastly, you need to print out the average temperature for the entire sample, in Celsius.
Your program must be able to work for an input file that contains following information:
# of temperature readings
time stamp
temperature
[# of temperature readings] [time stamp] [temperature]
The time stamp will have the following format:
YYYYMMDDHHMM (e.g. 200708201425) T
his should be converted to:
08/20/2007 1425
The temperature will have the following format:
Xtemp, where X is either a C or an F (e.g. C17.5 or F68.34)
Note that some of the temperatures are already in Celsius and some are in Fahrenheit. You only need to convert the Fahrenheit temperatures to Celsius.
So, the file could look like this
2
200707211245 F70.5
200708220812 C19.97
and the output could look like this:
BIODATA Formatted Ouput
21.38 C --- recorded on 07/21/2007 at 1245
19.97 C --- recorded on 08/22/2007 at 0812
Average Temp --- 20.68 C
Note: You must format the floating point numbers to two decimal places.
Input to program: Input file of time stamps and temperatures (Name this file "biodata.dat"). For testing purposes you have to create this file yourself according to the rules described above. Grader will use his/her own file to test your program but your submission must still include the input file that you created.
Output from program: Formatted output must be stored in “filtered_biodata.dat”. This file should be created by your code.
You should have at least two functions: One to convert the time stamp to a human readable string and another to convert a Fahrenheit temperature to Celsius. You may have more if you wish.
You must use character arrays (c-strings) to re-arrange data. You cannot use string objects and any methods that are included in library, i.e, you cannot use #include<string> in your code, otherwise you will be penalized. You can use c-string #include<cstring>library -
Error processing. You program must detect several errors in the input file. Please refer to the grading criteria document for the details.
It need to be done in C++ program.
Explanation / Answer
//main.cpp
#include <iostream>
#include <iomanip>
#include <fstream>
#include <cmath>
using namespace std;
void formatDate( ofstream& fout, char date_array[] );
double convertTemp ( double temperature );
double charToFloat( char temp_array[], double& temperature, const int TEMP_ARRAY_SIZE );
int main ()
{
const int TEMP_ARRAY_SIZE = 7,
DATE_ARRAY_SIZE = 13;
int file_input_lines = 0,
loop_count = 0;
double temperature = 0.0,
temp_avg = 0.0;
char date_array[DATE_ARRAY_SIZE],
temp_array[TEMP_ARRAY_SIZE];
ifstream fin;
ofstream fout;
fin.open("biodata.dat");
if ( !fin ) //Terminates program if input file fails to open.
{
cout << "Program terminated. Input file failed to open.";
fin.close();
return 1;
}
fout.open("filtered_biodata.dat");
if ( !fout ) //Terminates program if output file fails to open.
{
cout << "Program terminated. Output file failed to open.";
fin.close();
fout.close();
return 2;
}
fout << "BIODATA Formatted Output" << endl << endl;
fin >> file_input_lines;
for ( ; loop_count < file_input_lines; ++loop_count )
{
fin >> date_array >> temp_array;
if ( temp_array[1] == '-' ) //Terminates the program if it runs
{ //into a negative temperature.
fout << "Negative temperature readings not allowed." << endl
<< "Program Terminated.";
return 3;
}
if ( ( temp_array[0] != 'C' ) && ( temp_array[0] != 'F' ) )
{
fout << "Temperature measurement '" << temp_array[0] //Terminates the program if it runs
<< "' unit not recognized. Must be 'F' or 'C'." << endl //into an invalid temperature unit
<< "Program Terminated. ";
return 4;
}
temperature = charToFloat( temp_array, temperature, TEMP_ARRAY_SIZE );
if ( temp_array[0] == 'F' )
temperature = convertTemp ( temperature );
fout << fixed << setprecision(2) << temperature;
formatDate( fout, date_array );
temp_avg = temp_avg + temperature;
}
temp_avg = temp_avg / loop_count;
fout << endl << "Average Temp --- " << temp_avg << " C";
fin.close();
fout.close();
return 0;
}
/*
function: charToFloat
parameter: temp_array ( char ) temperature ( double ) and constant TEMP_ARRAY_SIZE ( int )
returns: The float value of a temperature stored as a character array.
*/
double charToFloat( char temp_array[], double& temperature, const int TEMP_ARRAY_SIZE )
{
int count = 1,
decimal_place = 0;
temperature = 0.0;
for ( int h = 1; h < TEMP_ARRAY_SIZE; ++h ) // This loop fills the non-decimal elements of the char
{ // array with the integer value of the element, and
if ( temp_array[h] == '.' ) // calculates the decimal_place.
{
decimal_place = h - 1; // -1 because it doesn't count the first element of
} // the array when calculating the decimal_place.
else
temp_array[h] = temp_array[h] - 48; //converts ascii value to integer value
}
for ( int j = 1; j < TEMP_ARRAY_SIZE - 1; ++j ) //This loop turns the elements in the char
{ //array with the correct integer value into
//a float.
if( j <= decimal_place ) //This if statement multiplies elements to the
temperature = temperature + ( temp_array[j] * //left of the decimal_place by degrees of 10.
( pow ( 10.0, decimal_place - j ) ) );
else if( temp_array[j] == '.') //Do nothing with the element holding the
continue; //place.
else
{
temperature = temperature + temp_array[j] * 1.0 / //This statement multiplies elements to the
( pow ( 10.0, decimal_place - count ) ); //right of the decimal_place by the reciprocal
--count; //of degrees of 10.
}
}
return temperature;
}
/*
function: formatDate
parameter: fout ( ofstream ) and date_array[] ( char )
returns: Outputs a timestamp stored in a character into a human readable format.
*/
void formatDate( ofstream& fout, char date_array[] )
{
fout << " C --- recorded on "<< date_array[4] << date_array[5] << "/"
<< date_array[6] << date_array[7] << "/" << date_array[0] << date_array[1]
<< date_array[2] << date_array[3] << " at " << date_array[8]
<< date_array[9] << date_array[10] << date_array[11] << endl;
}
/*
function: convertTime
parameter: temperature ( double )
returns: Converts a Fahrenheit temperature measurement into Celcius.
*/
double convertTemp ( double temperature )
{
temperature = ( temperature - 32 ) * (5.0/9);
return temperature;
}
============================================================================
biodata.dat
=============================================
filtered_biodata.dat
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.