Programming Concepts

Check your understanding - Assignments

Assignment is the action of putting a value into a variable. It is often represented by the '=' symbol, which is read as 'is assigned the value of'. What would the result of the following assignments? Note: Here, PI is a constant with a value set at 3.1

intRadius = 2
dblArea = intRadius * intRadius * PI

intRadius contains the value 4
dblArea contains the value 12.4
PI contains the value 3.1

No. Variables on the right of an assignment are unchanged in an assignment.

intRadius contains the value 2
dblArea contains the value 12.4
PI contains the value 3.1

Yes

intRadius contains the value 0
dblArea contains the value 12.4 PI contains the value 3.1

No. Variables on the right of an assignment are unchanged in an assignment - variable values aren't 'consumed' when they are used.

intRadius contains the value 0
dblArea contains the value 12.4
PI contains the value 0

No. Variables on the right of an assignment are unchanged in an assignment, in addition constants can't change.

intRadius contains the value 2
dblArea contains the value 12.1
PI contains the value 3.1

No. A program will always get the maths right!
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