Trying to make a VERY Simple program & having trouble.

[WillMcc]

As the title says, more or less. I'm just trying to make a program basically (Variable) + (Variable) = (Total)

Here is the script:

// Variable + Variable = Total.cpp : main project file.

#include "stdafx.h"

using namespace System;

void main()
{
    float num1;
    float num2;
    float total;

    cout<<"enter a value for the first variable:";
    cin>> num1;
    cout<<"enter a value for the second variable:";
    cin>> num2;

    total = num1 + num2;

    cout<<"The sum of the numbers =" << total;
}

I think that #include "stdafx.h" is a template from the IDE that I'm using (Microsoft Visual C++ 2008 Express Edition)

Here is the error that I get when I try to compile it...:

------ Build started: Project: Variable + Variable = Total, Configuration: Debug Win32 ------
Compiling...
Variable + Variable = Total.cpp
.\Variable + Variable = Total.cpp(13) : error C2065: 'cout' : undeclared identifier
.\Variable + Variable = Total.cpp(14) : error C2065: 'cin' : undeclared identifier
.\Variable + Variable = Total.cpp(15) : error C2065: 'cout' : undeclared identifier
.\Variable + Variable = Total.cpp(16) : error C2065: 'cin' : undeclared identifier
.\Variable + Variable = Total.cpp(20) : error C2065: 'cout' : undeclared identifier
Build log was saved at "file://c:\Documents and Settings\Owner\My Documents\Visual Studio 2008\Projects\Variable + Variable = Total\Variable + Variable = Total\Debug\BuildLog.htm"
Variable + Variable = Total - 5 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Any help is appreciated, again take into account that I really don't have any clue what I'm doing, This is like my first week or so in CPP, so bare with me.

[joshmo]

You need to include<iostream> this is where the cin and cout are found. Also change void main to int main. A main function must always return a value. You need to also change

using namespace system

to

using namespace std;

[Agni]

You need to include the file which declares cout,cin i.e. #include <iostream> and namespace 'std'. i dont think you need the stdafx.h at all.

and please read the welcome guide to understand the posting rules and regulations.

[WillMcc]

Got it, I'll definitly check out the rules & regulations right after this. Here is the error message I got after changing the script:

------ Build started: Project: Test 2, Configuration: Debug Win32 ------
Compiling...
Test 2.cpp
.\Test 2.cpp(3) : warning C4627: '#include <iostream>': skipped when looking for precompiled header use
Add directive to 'stdafx.h' or rebuild precompiled header
.\Test 2.cpp(22) : fatal error C1010: unexpected end of file while looking for precompiled header. Did you forget to add '#include "stdafx.h"' to your source?
Build log was saved at "file://c:\Documents and Settings\Owner\My Documents\Visual Studio 2008\Projects\Test 2\Test 2\Debug\BuildLog.htm"
Test 2 - 1 error(s), 1 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

[joshmo]

Did you remove the stdafx.h? post your updated code here so we can see what you have done

[Nick Evan]

Did you remove the stdafx.h? post your updated code here so we can see what you have done

Yes he did.

It's important to #include "stdafx.h" at the very beginning of your program.

#include "stdafx.h"
#include <iostream>

using namespace std; 
//etc

If you don't want to use the precompiled header, you can uncheck the option "use precompiled header" when creating a project.

[WillMcc]

Awesome, That seemed to solve it. One last question - When I debug it, what do I do to have it stay up (rather than adding Variable + Variable then getting total and closing)

Hope that made sense.

[Ellisande]

You just need to add cin.get(); at the bottom, right before the closing {

[WillMcc]

Awesome, works as it should now. Thanks a lot.