Skill set for this LAB:

• Understand and implement the Program Development Cycle
• Use Simple Functions
• Use Top-Down Design
• Use variables and assignment statements
• Use input and print functions
• Use basic arithmetic operations
• Save, run and submit programs
• Testing programs

• Lab Assignment

  Problem 1 (100 points): Work commute requires driving on highway and crossing the bridge. The highway has 3 exits, and the cost is defined by table 1 below. The highway could be used in both directions. The bridge cost is defined by table 2.

  Write a function highway(in_exit, out_exit) that has two parameters, in_exit - exit number the car enters the highway, and out_exit - the exit number the car exits the highway. The function returns the cost of the highway drive. Use Table 1.

  Pay attention, the function will only take care of the valid exit numbers. YOU HAVE TO CHECK VALIDITY OF THE INPUT IN MAIN AND NOT TO CALL THE FUNCTION IF EXITS ARE NOT VALID.

  
  Write a function bridge(car_type, ez_pass) that has two parameters, car_type that could be 1 or 2, 1 for regular car and 2 for track or bus, and ez_pass indicator, that could be 0 ( no ez pass) or 1 (there is ez pass). The function returns the cost to cross the bridge. Use Tables 2 and 3.

  Pay attention, the function will only take care of the valid values of parameters. YOU HAVE TO CHECK VALIDITY OF THE INPUT IN MAIN AND NOT TO CALL THE FUNCTION IN CASE OF INVALID INPUT

  Write a program that reads in_exit, out_exit, car type and ez pass indicator and calculates total cost of work commute. In case and at least one of the inputs is not valid, the program outputs the error message.

  TABLE 1: Highway Cost:

  X	1	2	3
  1	X	$2.5	$3.5
  2	$2.5	X	$1.5
  3	$3.5	$1.5	X

  TABLE 2: Bridge Cost NO EZ PASS

  CAR TYPE:	COST
  1 :	$5
  2 :	$6

  TABLE 3: Bridge Cost EZ PASS

  CAR TYPE:	COST
  1 :	$4.5
  2 :	$4.5