// PROBLEM 1: Allocate a new stock struct and initialize its fields.

// Integer fields like 'count' and 'lo_index' should be initialied to

// -1. Pointer fields like 'prices' should be initialized to

// NULL. The stock should be heap-allocated using malloc() and

// returned. Since this is an allocation function, no use of 'free()'

// should appear.

stock_t *stock_new(){

// WRITE ME

return NULL;

}

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