Short Answers
1. Modules help you in the sense of reducing the duplication of programs within a program.
2. The module has two parts, the body and header. The header indicates the starting point and the body is a list of statements that belong to the module.
3. When the module is executing, the computer jumps to that module and executes the statements in the modules body.
4. The local variable is declared in the module. It also belongs in the module in which its declared and only statements inside that module can access that module can access the variable.
5. The local variable usually beings at the variables declaration and ends at the end of the module which is then the variable is declared.
6. The difference between the both is that only a copy of the arguments value is passed and passing by reference means that the argument is passed into a specific type of parameter.
7. Global variables make debugging difficult because they make programming hard to understand, modules that use global variables are usually dependent and you have to track down every statement.

Algorithm Workbench 1. Module main()
Declare userNum as Integer
Display “Enter a number”
Input userNum
Call TimesTen(usernum)
Display usernum
End

5. 13.4
00.0
00.0
6. 1, 3.4
0, 0
0, 0 7. Allows changes the values of passed parameters
1,3.4
0,0
0,0

Doesn’t allow changing of parameters
1,3.4
0,0
1,3.4

Programming Exercises 1. Kilo=input (“Enter distance in kilometers”)
Miles=Kilo
Print”, Kilo

2. Module TotalPurchase
Declare Double amount, total
Declare TAX=.06
While I<6
Display “Enter the price”
Input amount
Total=total+amount
I=I+1
End while
Display “Subtotal is:” + total
Display “Tax is:” + (total*TAX)
Display “Total is:”=(total*TAX)+total)
End Module