C++ Passing Variables Between Classes

[chronie]

Hi,

I am new to programming, but I think this is a simple error. For my programming code I am trying to pass a variable from a certain class to another class. The code is similar to below.Class 1

#include "class2"

Class2 class

var1=1
var2=2

class.acceptingvariablesfrom1(var1 var2)

Class 2

class.acceptingvariablesfrom1(var1 var2)

count << var1 << endl;

That is what my basic code looks like. I send my var1 and var2 to my acceptingvariablesclass however, how do I have them displayed. When I do my count statement I get garbage. Am I doing something wrong? Class1 and Class2 are different .cpp files. In Class2 do I have to define var1 and var2 again even though they were defined in class1?

I think this is a basic question but I just don't understand why I am getting garbage values?

 

[D H]

You need to use commas to separate the variables.

 

[chronie]

I'm sorry, in my real code I had commas. I am just confused as to why garbage values print out.

 

[airborne18]

Post the actual code with declarations. This sample is nothing. (what are var1 and var2? ) And what param types is the function expecting?

Garbage could be from anywhere in your code if you trashed a pointer somewhere.

Create a small simple program that tests the classes, that will at least isolate whether it is the class or not.

 

[jtbell]

Agreed. The best thing to do is construct a short, complete example program that can be pasted into a compiler and compiled successfully, and that demonstrates the problem.

 

[Borek]

Besides, with this approach 9 times out of 10 you will find the problem by yourself.

 

[airborne18]

Besides, with this approach 9 times out of 10 you will find the problem by yourself.

Yep. My daughter is a Comp Eng and she took a Comp Sci programming course, which was C at her University. I was shocked at how the prof. didn't teach the students proper style or technique. She stopped showing me her projects because I would get on her.

Not initializing pointers? That is not a style preference, it is a must do.

I think that is where the experience really comes into play; debugging.