Confused.. Help please?

This is a discussion on Confused.. Help please? within the C++ Programming forums, part of the General Programming Boards category; Since I learned arrays a couple of days ago I got really annoyed when this program didn't worked, could anyone ...

  1. #1
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    Confused.. Help please?

    Since I learned arrays a couple of days ago I got really annoyed when this program didn't worked, could anyone give me a hint?
    Code:
    #include <iostream.h>
    #include <cstdio>                //required to pause
    using namespace std;         //required to pause
    int main()
    {
        int array[4] = { 10, 20, 30, 40 };
        cout<<array[1]<<endl;
        cout<<array[2]<<endl;
        cout<<array[3]<<endl;
        cout<<array[4]<<endl;
        getchar();    //pause
        getchar();    //pause
    return 0;
    }
    What happened is, instead of outputting
    Code:
    10
    20 
    30 
    40
    it outputted
    Code:
    20 
    30 
    40 
    4370432
    Last edited by Noxir; 07-22-2004 at 01:54 AM.

  2. #2
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    > int array[4] = { 10, 20, 30, 40 };
    This declares an array from 0 to 3. There is no index 4.

    So:
    Code:
        cout<<array[0]<<endl;
        cout<<array[1]<<endl;
        cout<<array[2]<<endl;
        cout<<array[3]<<endl;

  3. #3
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    Oh thnx!

  4. #4
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    And if you've learned for-loops, you can print the array like this:
    Code:
    for (int i=0; i<4; i++)
        cout<<array[i]<<endl;

  5. #5
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    classic example of accessing an array outside it's boundry.
    • "Problem Solving C++, The Object of Programming" -Walter Savitch
    • "Data Structures and Other Objects using C++" -Walter Savitch
    • "Assembly Language for Intel-Based Computers" -Kip Irvine
    • "Programming Windows, 5th edition" -Charles Petzold
    • "Visual C++ MFC Programming by Example" -John E. Swanke
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    • "Mathmatics for 3D Game Programming & Computer Graphics" -Eric Lengyel

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