Adding and Subtracting integer arrays
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Thread: Adding and Subtracting integer arrays

  1. #1
    Join Date
    Apr 2013
    Posts
    2

    Adding and Subtracting integer arrays

    Ok so I am currently working on a program that uses a class to store integer arrays. I have most of the code done, but I am having trouble on the main.cpp part of my program. The program should display this:

    OBJ 1:
    2 3 4
    OBJ 2:
    1 4 -2
    Addition:
    OBJ 1 =
    3 7 6
    Subtraction:
    OBJ 1 = 1 -1 6




    But when I run and compile my program, this is what I get:


    OBJ 1:
    2 3 4
    OBJ 2:

    ADDING:
    OBJ 1 =
    4 6 8
    Subtraction:
    OBJ 1 =



    I would greatly appreciate it if someone could help me with this. Here is my current main.cpp:

    Code:
    #include <iostream>
    
    #include "SafeArray.h"
    
    using namespace std;
    
    
    
    int main()
    
    {
       // Declare a SafeArray object
        Safe obj;
        Safe obj2;
        int x;
    
        obj.set(2,0);
        obj.set(3,1);
        obj.set(4,2);
        
        
        cout << "OBJ 1: " << endl;
        obj.print();
    
        cout << "OBJ 2: " << endl;
        obj2.print();
    
        cout << "ADDING: " << endl;
        obj.add(obj2);
    
        cout << "OBJ 1 = " << endl;
        obj.print();
    
        cout << " Subtraction: " << endl;
        obj.subtract(obj2);
    
        cout << " OBJ 1 = " << endl;
        obj.print();
        
    
    
       return 0;
    
    }

  2. #2
    Join Date
    Apr 2013
    Posts
    2

    Re: Adding and Subtracting integer arrays

    Ok so I figured out the problem, but now my program will not subtract properly. Can anybody here take a look at my program and help me figure this out?



    Code:
    #include <iostream>
    
    #include "SafeArray.h"
    
    using namespace std;
    
    
    
    int main()
    
    {
       // Declare a SafeArray object
        Safe obj;
        Safe obj2;
        int x;
    
        obj.set(5,0);
        obj.set(6,1);
        obj.set(7,2);
        
        obj2.set(4,0);
        obj2.set(3,1);
        obj2.set(2,2);
        
        
        cout << "OBJ 1: " << endl;
        obj.print();
    
        cout << "OBJ 2: " << endl;
        obj2.print();
    
        cout << "ADDING: " << endl;
        obj.add(obj2);
    
        cout << "OBJ 1 = " << endl;
        obj.print();
    
        cout << " Subtraction: " << endl;
        obj.subtract(obj2);
    
        cout << "OBJ 1 = " << endl;
        obj.print();
        
    
    
       return 0;
    
    }

  3. #3
    Join Date
    Jan 2006
    Location
    Singapore
    Posts
    6,266

    Re: Adding and Subtracting integer arrays

    This Safe class is not part of the C++ standard library, so I am afraid that I have no clue as to how it works. Based on what you wrote, it seems that you implemented it, so you definitely have a bug in your code.
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  4. #4
    Join Date
    Dec 2012
    Location
    England
    Posts
    2,329

    Re: Adding and Subtracting integer arrays

    As the problem will be in the Safe class and you haven't provided the source we can't really advise other than to re-iterate what laserlight said in post #3 that you have a bug. Have you used the debugger to trace through the coe to find the cause of the problem?
    All advice is offered in good faith only. You are ultimately responsible for effects of your programs and the integrity of the machines they run on.

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