Write a header for the function named subtract subtract

Question

Answer the following question:

Question 10: Write a header for the function named subtract. Subtract returns nothing and has one double parameter named num.

Question 11: Evaluate the following expression: (5 * 6 % 7 * 8) - 9

Question 12: Given the following array definition:

int values[] = {1, 3, 6, 10};

what does the following display?

cout << values[2];

Can you give the answer ASAP and there is no word limit?