C++ :: Variable Nested For Loop

This code is used in scientific calculation for optimization problem.

Basically a particle is moving in a three dimensional space, its position is (x,y,z).

At each position, there is a fitness value associated with that position.

The fitness value is given by fitness(x,y,z) (code line 12~19).

We need to find out, when the particle moves around randomly, what is the highest possible fitness value.

To solve this, below code is used, and it produces correct result.

#define DIMENSION 3
#define MAXX 4
#define MINX 0
#define MESHsize 1
#include <iostream>
using namespace std;
float maxValue = 0.0;

[Code] ....

The output of the code:

[ fitness(0,0,0) = 0] [ fitness(0,0,1) = 1] [ fitness(0,0,2) = 4] [ fitness(0,0,3) = 9]
[ fitness(0,1,0) = 1] [ fitness(0,1,1) = 2] [ fitness(0,1,2) = 5] [ fitness(0,1,3) = 10]
[ fitness(0,2,0) = 4] [ fitness(0,2,1) = 5] [ fitness(0,2,2) = 8] [ fitness(0,2,3) = 13]
[ fitness(0,3,0) = 9] [ fitness(0,3,1) = 10] [ fitness(0,3,2) = 13] [ fitness(0,3,3) = 18]

..... so on

Answer: highest fitness = 27

Note: In this case, the values of x,y and z is integers from 0 to 3 inclusive.

For 3-dimensional space above, actually the code had run through 3 nested "for" loops.

Question: Above code works for 3-dimensional space. How to generalize the code, so that it works also for N-dimensional space, where N is an arbitrary integer?

( Note: possibly N = 30 )