Study the C++ code that appears on the next page and answer the following questions.

1. On what line number(s) are if statements located?

2. On what line number(s) are case statements located?

3. On what line number(s) are loops located?

4. On what line number(s) are arrays declared?

5. On what line number(s) are arrays accessed?

6. On what line number(s) are function(s) declared?

7. For every function you identified in #4 above:

a. Is the function ever called?

b. What are the functions arguments?

c. What value, if any, does the function return?

1) // Ex4_01.cpp

2) // Calculating gas mileage

3) #include

4) #include

5)

6) using std::cin;

7) using std::cout;

8) using std::endl;

9) using std::setw;

10)

11) int main()

12) {

13) const int MAX {20}; // Maximum number of values

14) double gas[ MAX ]; // Gas quantity in gallons

15) long miles[ MAX ]; // Odometer readings

16) int count {}; // Loop counter

17) char indicator {'y'}; // Input indicator

18)

19) while( ('y' == indicator || 'Y' == indicator) && count < MAX )

20) {

21) cout << endl << "Enter gas quantity: ";

22) cin >> gas[count]; // Read gas quantity

23) cout << "Enter odometer reading: ";

24) cin >> miles[count]; // Read odometer value

25)

26) ++count;

27) cout << "Do you want to enter another(y or n)? ";

28) cin >> indicator;

29) }

30)

31) if(count <= 1) // count = 1 after 1 entry completed

32) { // ... we need at least 2

cout << endl << "Sorry - at least two readings are necessary.";

33) return 0;

34) }

35)

36) // Output results from 2nd entry to last entry

37) for(int i {1}; i < count; i++)

38) {

39) cout << endl

40) << setw(2) << i << "." // Output sequence number

41) << "Gas purchased = " << gas[i] << " gallons" // Output gas

42) << " resulted in " // Output miles per gallon

43) << (miles[i] - miles[i - 1])/gas[i] << " miles per gallon.";

44) }

45) cout << endl;

46) cout <<

47) return 0;

48) }