3 Array and pointer exercises. Answer the following quest ions, and verify them by typing up, compiling and running the program int sum (int b), int size) int total-0 for (int i-0;icsize:1+0 total+bli return total; int mainCO int a [5]-(100,200,300,400,500 int *p- a //Todo: Vrite a statement to use p to set ato) to 100 //What's the difference of the tuo function calls, i any? Explain and confirn your anaver: int total sum (a, 5); int total2 sum (. 5) //Todo: Write a statement to set p to points to a(2) //After the above statement (that sets p to poitns to a[2], What's the output of the tollowing cout