Question

In this Final program you are going to use several concepts you learned in CSC 101 class, especially operations on or using FILES , LOOPS and FUNCTIONS. You need to implement C++ code that will read data from a file and process it as outlined below and write the processed data to an output file. You can refer to the file input.txt for how the data is made available to you and output.txt for how to write out the processed data. Your code will be tested using an input file with different values. The example input file shows one temperature value along with one word (Celsius or Fahrenheit) per line denoting its scale. The last line has a temperature value and the word Last. You need to ignore the temperature on this line since it doesn’t say whether it is Celsius or Fahrenheit). First determine how many lines are in the file. Your loop(s) will run this many times. Then read each line of the input file (in a loop) and if the word you read is Celsius then convert the temperature to Fahrenheit. If the word is Fahrenheit then convert the temperature to Celsius. Write two functions called convertFtoC and convertCtoF for performing the conversions. Pass input(s) by value and return the converted value using a return statement. As you read each line from the input file, call the appropriate function to convert the value and write the old value, its scale, new value and its scale to the output file. Close the input and output files after the loop. Maximum points 100. For 30 bonus points use arrays. Hint: You may have to open and close the input file more than once. input: 50 Celsius 5 Celsius 8 Celsius 50 Fahrenheit 80 Fahrenheit 10 Last sample output: 50 Celsius 122 Fahrenheit 5 Celsius 41 Fahrenheit 8 Celsius 46.4 Fahrenheit 50 Fahrenheit 10 Celsius 80 Fahrenheit 26.67 Celsius

Answer 1

Thanks for the question.

Here is the completed code for this problem. Comments are included so that you understand whats going on. let me know if you have any doubts or if you need anything to change.

Thank You !!

=========================================================================================

#include<iostream>
#include<fstream>
#include<string>

using namespace std;

double convertFtoC (double);
double convertCtoF (double);
// reads an input file and returns the number of lines
int getlines(const char* filename );
int getlines(const char* filename) {

ifstream myfile (filename);
int line_count=0;
double temp;
string scale;
while(1) {

myfile>>temp>>scale;
if(scale.compare("Last")==0 || scale.compare("last")==0) {
myfile.close();
return line_count;
}
line_count+=1;
}
}
// convert from F to C
double convertFtoC (double T) {
return (T-32)*5/9;
}
// convert from C to F
double convertCtoF (double T) {
return 32+ 9*T/5;
}

int main() {
  
// update the below line to point to the input file and output file
char * inputFile = "F:\\input.txt";
char * outputFile="F:\\output.txt";
  
int line_count = getlines(inputFile);
  
ifstream input;
input.open(inputFile);
ofstream output;
output.open(outputFile);

string scale;
double temperature;
for(int line=1; line<=line_count; line++) {

input>>temperature>>scale;
if(scale.compare("Celsius")==0) {
double toF = convertCtoF(temperature);
output<<temperature<<" Celsius "<<toF<<" Fahrenheit"<<endl;
} else {
double toC = convertFtoC(temperature);
output<<temperature<<" Fahrenheit "<<toC<<" Celsius"<<endl;
}

}
cout<<"Successfully converted."<<endl;
// close both the input and output file
input.close();
output.close();

}

===============================================================================

thanks !