Extea

Question 1

what’s a subroutine

Answer 1

a self contained piece of code that had an identifier and can be called from anywhere in a program

Question 2

what’s a function

Answer 2

a subroutine that des returns value to the program that called it

Question 3

what’s a parameter

Answer 3

a variable that’s sent to a subroutine

Question 4

local variables

Answer 4

the variable of constant that can be accessed in the surrounding it’s declared within

Question 5

global variable

Answer 5

the variable or constant that can be only accessed in the subroutine it is declared within

Question 6

what are adv of using subroutines procedures and functions

Answer 6

• reusabikity
• organised large sections of code into related area
• decomposing large problems into simpler steps
• reducing duplication louise

Question 7

what’s by val

Answer 7

a method of passing a parameter to a procedure where the value of the variable can’t be changed by the procedure

Question 8

By ref

Answer 8

a method of passing a parameter where the value of the variable can be changed by the procedure

Question 9

library routine

Answer 9

a tested and ready to use routine available in the development system of a programming language that can be incorporated into a program