I am very new to the world of C++, but was asked to program a Fahrenheit to Celsius converter application. I FINALLY got the code to not give me any error messages, but every time I execute the application, the output answer for celsius is 0. Could anyone help me determine where the problem is??




#include <iostream>
#include <iomanip>

using std::cout;
using std::cin;
using std::endl;
using std::setprecision;
using std::ios;
using std::setiosflags;


//function prototypes
int getFahrenheit();
int calcCelsius(int, int);


int main()
{
int far = 0;
int subt = 32;
int cel = 0;

far = getFahrenheit();





//display celTemp
cout << setiosflags(ios::fixed) << setprecision(0);
cout << "Celsius temperature is: " << cel << endl;

return 0;
} //end of main function

//*****function definitions*****
int getFahrenheit()
{
double FahrenH = 0.0;
cout << "Enter temperature in Fahrenheit: ";
cin >> FahrenH;
return FahrenH;
} //end of getFahrenheit function

int calcCelsius(int far, int subt)
{
int cel = 0.0;
cel = (5.0*(far - subt)/9.0);
return cel;
} //end of calCelsius function

I think you are using the wrong data type "int" this for whole numbers. "float" is used for decimal numnbers. Hope this helps.

changing to "float" didn't seem to help... my solution keeps being "0" when executed. It seems to be more of a logical-type problem. (i.e. is part of the equation being calculated as 0?)

You never called the calcCelsius function to set the cel variable in main(). With your current implementation you need to add the following code below where you have far = getFahrenheit():
cel=calcCelsius(far, 32)

On a side note, why is subt a parameter of calcCelsius()? Is there any case where this isn't going to be 32?