4D array

[Stephen Tyndall]

Hey. I was attempting a four-dimensional array and I couldn't get it to
work. The code below gave me 23 errors:

// BEGIN CODE
int main() {

int nArray[2][2][2][2] = {

{ { {1,2} , {3,4} } , { {5,6} , {7,8} } }

{ { {9,10} , {11,12} } , { {13,14} , {15,16} } }

};

cout << "nArray[0][0][0][0]: " << nArray[0][0][0][0] << endl;

cout << "nArray[1][0][1][0]: " << nArray[1][0][1][0] << endl;

cout << "nArray[1][1][0][1]: " << nArray[1][1][0][1] << endl;

return 0;

}

// END CODE

I'm fairly certain that the code should work; it was an expansion on a
working 3D array I had just finished, and I've gone over it several times.
I'm pretty sure I'll never need a 4D array, but I'd like to know why this
one doesn't work.

[jota]

int nArray[2][2][2][2] = {
{ { {1,2} , {3,4} } , { {5,6} , {7,8} } }, //<-- forgot a comma-sign to
separate the first half and the second half
{ { {9,10} , {11,12} } , { {13,14} , {15,16} } }
//JT

[Thomas Matthews]

Stephen Tyndall wrote:

Hey. I was attempting a four-dimensional array and I couldn't get it to
work. The code below gave me 23 errors:

// BEGIN CODE
int main() {

int nArray[2][2][2][2] = {

{ { {1,2} , {3,4} } , { {5,6} , {7,8} } } You are missing a ',' at the end of the above line.

{ { {9,10} , {11,12} } , { {13,14} , {15,16} } }

};

cout << "nArray[0][0][0][0]: " << nArray[0][0][0][0] << endl;

cout << "nArray[1][0][1][0]: " << nArray[1][0][1][0] << endl;

cout << "nArray[1][1][0][1]: " << nArray[1][1][0][1] << endl;

return 0;

}

Here is my code that works:
TH009MA@th009ma-shl2-01 /cygdrive/d/temp
$ cat junk.cpp
#include <iostream>
using namespace std;

int main() {

int nArray[2][2][2][2] = {

{ { {1, 2} , { 3, 4} } , { { 5, 6} , { 7, 8} } },

{ { {9,10} , {11,12} } , { {13,14} , {15,16} } }

};

cout << "nArray[0][0][0][0]: " << nArray[0][0][0][0] << endl;

cout << "nArray[1][0][1][0]: " << nArray[1][0][1][0] << endl;

cout << "nArray[1][1][0][1]: " << nArray[1][1][0][1] << endl;

return 0;

}
TH009MA@th009ma-shl2-01 /cygdrive/d/temp
$ g++ -o junk junk.cpp

TH009MA@th009ma-shl2-01 /cygdrive/d/temp
$ ./junk
nArray[0][0][0][0]: 1
nArray[1][0][1][0]: 11
nArray[1][1][0][1]: 14

--
Thomas Matthews

C++ newsgroup welcome message:
http://www.slack.net/~shiva/welcome.txt
C++ Faq: http://www.parashift.com/c++-faq-lite
C Faq: http://www.eskimo.com/~scs/c-faq/top.html
alt.comp.lang.learn.c-c++ faq:
http://www.raos.demon.uk/acllc-c++/faq.html
Other sites:
http://www.josuttis.com -- C++ STL Library book

[Stephen Tyndall]

Hey, thanks guys. Good eye.

"jota" <ab*@hotmail.com> wrote in message
news:dW******************@newsb.telia.net...

int nArray[2][2][2][2] = {
{ { {1,2} , {3,4} } , { {5,6} , {7,8} } }, //<-- forgot a comma-sign to
separate the first half and the second half
{ { {9,10} , {11,12} } , { {13,14} , {15,16} } }
//JT

[Victor Bazarov]

Stephen Tyndall wrote:

Hey.
Hey yourself.
I was attempting a four-dimensional array and I couldn't get it to
work. The code below gave me 23 errors:
What 23 errors?

// BEGIN CODE
int main() {

int nArray[2][2][2][2] = {

{ { {1,2} , {3,4} } , { {5,6} , {7,8} } }

{ { {9,10} , {11,12} } , { {13,14} , {15,16} } }

};

cout << "nArray[0][0][0][0]: " << nArray[0][0][0][0] << endl;
It seems that 'cout' and 'endl' are undefined at this point. Are
you sure you didn't forget

#include <iostream>
using std::cout;
using std::endl;

at the beginning of your code?

cout << "nArray[1][0][1][0]: " << nArray[1][0][1][0] << endl;

cout << "nArray[1][1][0][1]: " << nArray[1][1][0][1] << endl;

return 0;

}

// END CODE

I'm fairly certain that the code should work; it was an expansion on a
working 3D array I had just finished, and I've gone over it several times.
I'm pretty sure I'll never need a 4D array, but I'd like to know why this
one doesn't work.

What particularly "doesn't work"?

V

[Stephen Tyndall]

The only thing wrong was a comma at the end of the second line of array
code. I only put the code for main() in the original message. At the end
of the message, I wrote that the three-dimensional array I programmed before
worked perfectly fine. That would seem to imply that the problem is with
the array.

"Victor Bazarov" <v.********@comAcast.net> wrote in message
news:xu****************@ord-read.news.verio.net...

Stephen Tyndall wrote:

Hey.

Hey yourself.

> I was attempting a four-dimensional array and I couldn't get it to
work. The code below gave me 23 errors:

What 23 errors?

// BEGIN CODE
int main() {

int nArray[2][2][2][2] = {

{ { {1,2} , {3,4} } , { {5,6} , {7,8} } }

{ { {9,10} , {11,12} } , { {13,14} , {15,16} } }

};

cout << "nArray[0][0][0][0]: " << nArray[0][0][0][0] << endl;

It seems that 'cout' and 'endl' are undefined at this point. Are
you sure you didn't forget

#include <iostream>
using std::cout;
using std::endl;

at the beginning of your code?

cout << "nArray[1][0][1][0]: " << nArray[1][0][1][0] << endl;

cout << "nArray[1][1][0][1]: " << nArray[1][1][0][1] << endl;

return 0;

}

// END CODE

I'm fairly certain that the code should work; it was an expansion on a
working 3D array I had just finished, and I've gone over it several times. I'm pretty sure I'll never need a 4D array, but I'd like to know why this one doesn't work.

What particularly "doesn't work"?

V