using array created in one function in another fucntion - c

Question

I have a function in which i am reading a file with products and price of each product, and i am storing products in array and prices in another array like this:
void displayProducts(int balance){
printf("-----------Available Products-----------\n");
putchar('\n');
int row=0;
const char *products[8];
int prices[8];
char line[MAX_LINE_SIZE + 1]; // ptr to the current input line
FILE *fp;
fp = fopen("machinedata.txt", "r");
if (fp == NULL)
{
printf("Error while opening the file.\n");
exit(EXIT_FAILURE);
}
while (fgets(line, MAX_LINE_SIZE, fp)) {
char *next_ptr = NULL;
char *next_item = strtok_s(line, ",;", &next_ptr);
while (next_item != NULL){
char *item_ptr = NULL;
char *name = strtok_s(next_item, "-", &item_ptr);
if (name == NULL)
{
fprintf(stderr, "Failed to scan name out of [%s]\n", next_item);
break;
}
int price;
next_item = strtok_s(NULL, " ,", &item_ptr);
//assert(next_item != NULL);
if (strcmp(name," ")){
if (sscanf(next_item, "%d", &price) != 1)
fprintf(stderr, "Failed to convert [%s] to integer\n", next_item);
else if (balance > price){
row++;
products[row] = name;
prices[row] = price;
printf("%d) %s price %d\n", row, products[row], prices[row]);
}
next_item = strtok_s(NULL, ",;", &next_ptr);
}
}
}
}
The problem is that now i want to create a function that uses this two arrays ("Buy" function). the function will get a number and than gegt the price from the prices array and do something with it in the main() function.
how can i use the values in the prices array in a different function?

Answer 1

You can do it just by passing the arrays to the function and then index your item:
void buy(int * my_int_array_prices)
{
//Here, this would return you the value of the second item
//in your array: my_int_array_prices[1]
}
And you can call your function like:
buy(prices);
Since type * is a pointer as type []. type your_var[] it's a pointer to a memory zone decided at compile time, so it is a pointer.