typedef struct Data_struct { int itemCount; double price; } Data; int main(void) { int number = 3; double price = 20.0; double total; Data myData = {number, price}; total = totalPrice(&myData); printf("Total Price: %.Of ", total); return 0; } Given the above, write the signature of the totalPrice function, i.e. everything up to but not including the {} for the function. For full marks, you must give the most efficient. Use as few spaces as possible in your answer. If needed use my Data as the parameter name