Brincando com a pilha...

#include <stdio.h>

void func()
{
    int array[2];
    array[0] = 23;
    array[1] = 40;
    array[11] = 75;
}

int main()
{
    int var = 56;

    func();

    printf("Var: %d\n",var);

    return 0;
}