C/C++ Eclipse Error 'Program File Does Not Exist'

[Void123]

I am pretty ignorant of this language. I am working from a '...for dummies' book to teach myself and after the first few pages I have already stumbled upon a problem. I have attached a code, pretty simple one, which I'm trying to run but there are some errors and I don't know how to resolve them. I am using eclipse and when I debug I get a message which says 'program file does not exist.' If someone can help me with this I would appreciate it.

 

[Mark44]

What errors are you getting? If there are compiler errors (as opposed to warnings), the compiler will not generate a program file, so you can't debug.

The first thing I notice is a malformed comment ( / ) in the first line.

Something much less serious, but not incorrect, is the conversion formula, which is more complicated than it needs to be.
Fahrenheit = Celsius *(212 - 32)/100 + 32

This is exactly the same as Fahrenheit = Celsius *9/5 + 32, since (212 - 32)/100 = 180/100 = 9/5.

/
// Program to convert temperature from Celsius degree units into Fahrenheit degree
// units into Fahrenheit degree units:
// Fahrenheit = Celsius *(212 - 32)/100 + 32
//
#include <cstdio>
#include <cstdlib>
#include <iostream>
using namespace std;

int main(int nNumberofArgs, char* pszArgs[])
{
// enter the temperature in Celsius
int celsius;
cout << "Enter the temperature in Celsius:";
cin >> celsius;
// calculate conversion factor for Celsius
// to Fahrenheit values
int factor;
factor = 212 - 32;

// use conversion factor to convert Celsius
// into Fahrenheit values
int fahrenheit;
fahrenheit = factor * celsius/100 + 32;

// output the results (followed by a NewLine)
cout << "Fahrenheit value is";
cout << fahrenheit << endl;

// wait until user is ready before terminating program
// to allow the user to see the program results
system("PAUSE");
return 0;

}

 

[mgb_phys]

fahrenheit = factor * celsius/100 + 32;

Doesn't do what you think it does.
For anything below boiling point it will return 32.

 

[Mark44]

fahrenheit = factor * celsius/100 + 32;

Doesn't do what you think it does.
For anything below boiling point it will return 32.

I agree with the "doesn't do what you think it does" part, but if celsius is a multiple of 10, the formula will give the right result. If celsius is not a multiple of 10, the results will be surprising to someone who doesn't understand integer division in C and C++.

The * and / operators are at the same precedence level, and are evaluated left to right.

 

[Void123]

What errors are you getting? If there are compiler errors (as opposed to warnings), the compiler will not generate a program file, so you can't debug.

The first thing I notice is a malformed comment ( / ) in the first line.

I corrected it, but its still doing the same thing.

 

[jmaat7]

You're running it in eclipse? With what compiler? My guess with that error message is that you don't have the right plugins installed in the IDE. I've never worked with C++ in eclipse, but I think there is a development kit called CDT that you can use. Did you try a different IDE? I got this code to work in visual studio, so I don't know what the problem is.

The only thing is you have to add the standard header file
#include "stdafx.h"

Let us know if you're still getting errors and what they say. See if you can get it to compile with something besides eclipse.