Programming - terminology

Question 1

What is the definition of declaration?

Answer 1

A statement of a variable name, data type and sometimes initial value - in most languages, must be done before the variable is used.

Question 2

What is the definition of input?

Answer 2

Input is taking data into the program. For example, this could be a click of the mouse, selection of a value in a combo box or a value typed into a textbox.

Question 3

What is the definition of output?

Answer 3

Output is data produced from the program. This could displayed on-screen or sent to a printer.

Question 4

What is the definition of assignment?

Answer 4

Assignment is setting a variable to a value.

Question 5

What is the definition of variables?

Answer 5

A variable is a value represented by a name. The value can be changed throughout the program. The scope of the variable is where it can be used in the program (local or global).

Question 6

What is the definition of local variable?

Answer 6

A local variable is used in one sub-routine only.

Question 7

What is the definition of global variable?

Answer 7

A global variable can be used anywhere in the program

Question 8

What is the definition of constants?

Answer 8

A constant is like a variable but is not changed; it is always the same. e.g. pi

Question 9

What is the definition of sub-routines?

Answer 9

A sub-routine is part of a program and allows the program to be broken into chunks.
A sub-routine can be called from th main program as many times as needed.