C++ For Dummies

AFI_Flame · 10-10-2004, 06:21 PM

What's wrong with this code? I copied it exactly from the book.

Code:

//
// Program to convert temperature from Celsius degree
// units into Farenheit degree units:
// Farenheit = 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
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;
}

It compiles OK using g++ Conversion.cpp -o Conversion but when I go to run it this is what I get.

Code:

Enter the temperature in Celsius:45
Fahrenheit value is:113
sh: line 1: PAUSE: command not found

EDIT: Woops I just found another post with this exact problem lol. If I knew how to close this thread I would.

cadj · 10-10-2004, 09:15 PM

system("PAUSE"); this is ment for a windows (DOS) system, your program is trying to run the "pause" program which shows a "press any key to continue" im not sure what the linux equiv is

Thomasseafort · 10-14-2004, 11:54 AM

I agree with cadj there is no Pause command that is why command not found error.
You can try using the break In C++
You can use an if command to see a cin and then a timer. Or you could use a case and switch command.

Thomasseafort · 10-14-2004, 11:56 AM

On second thought just comment out the last line and it will work

AFI_Flame · 10-14-2004, 08:28 PM

yea... I was wondering something else now... what does "return 0;" do? I was deleting that too.

Thomasseafort · 10-15-2004, 07:28 AM

Return is the enter ket on keyboard, (0) means nothing so when you return nothing or null the program stops I did'nt mean to comment that out the line above it

rustynailz · 10-15-2004, 02:00 PM

main() is a function just like any other. The return value of it is available to the caller (in this case the CLI). It's typical practice to return 0 when all is well, and non-zero otherwise. For example, suppose a user enters invalid input for one of the cin>>s. You could read the input as a string, check to see if it's valid, and if not, print an error message and return 1.