Simple multi-dimensional C-style array gives segmentation fault : 11

Question

const int L=10;
std::complex<double> c_array[L][L][L][L][L][L]    // 6 dimensions

Space needed: 2*8*10^6 bytes

It should not use up all of memory, right?

Answer 1

There is a stack size limit for every processes. Therefore, if you really want to create this array locally (in the stack), the only solution is to increase the stack size limit for your program. How to change the stack size limit depends on your OS.

Alternative is to create this array in the heap. To do that you have to use "new" keyword as follows.

std::complex<double> *c_array = new std::complex<double>[L][L][L][L][L][L];