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carraysstructstack-overflow

Cannot create large struct array in C

In need of constructing a hash table, I have to create a large struct array with at least 1,000,000 items. 

#include <stdio.h>

#define N 1000003

struct hashTable
{
    char productID[16];
    double points;
};

int main(int argc, char const *argv[])
{
    struct hashTable table[N] = {0};          // Stack Overflow happens here

    return 0;
}

The problem is that I get a stack overflow whenever I try to create such an array.

Is there a way to overcome this? Is there another way to create such large array?

Solution 
  • hashTable *table = malloc(N*sizeof(hashTable)); //allocate memory
... use it
free(table); //free memory