Thread: 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

> 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;

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;

classic example of accessing an array outside it's boundry.