max size in array 2 dimentional in c++

I want to execute large computational program in 3 and 2 dimension with size of array[40000][40000] or more ,this code can explain my problem a bit

#include<iostream>
#include<cstdlib>
#include<vector>
using namespace std;
int main(){
    float array[40000][40000];
    //vector< vector<double> > array(1000,1000);    
    cout<<"bingo"<<endl;
    return 0;
}