ae40a62d-d4e4-4a44-b206-72e6fdf3b240 5 4 5 decimal

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ASSIGNMENTS (HOLD THE MOUSE OVER EACH DEFINITION TO SEE WHAT IS STORED IN MEMORY)

1. Assigning formulas BEFORE defining varialbe values

a b c + :

Notice that all the definitions here contain "b" and "c" as names, not as some numbers

b a b c + :

b c a b c + :

TESTS

Defining the variables

b 3 :

c 4 :

Both b and c are taken from above definitions (3 and 4) a 7

b is taken from parameter, c from above (4) 5 a 9

both b and c are taken from parameters 58 a 13

Changing the variables

b 7 :

c 6 :

Both b and c are taken from above definitions (7 and 6) a 13

b is taken from parameter, c from above (6) 5 a 11

both b and c are taken from parameters 58 a 13

2. Assigning formulas AFTER defining varialbe values

Variables first

y 3 :

z 4 :

x is defined constant (x=7), independent of any future y and z modifications x y z + :

x(y)=y+4; no future changes to z will matter y x y z + :

x(y,z)=y+z y z x y z + :

TESTS

Both y and z are taken from above definitions (3 and 4) x 7

y is taken from parameter, z from above (4) 5 x 9

both y and z are taken from parameters 58 x 13

Changing the variables

y 7 :

z 6 :

Both y and z are taken from first definitions (3 and 4) x 7

y is taken from parameter, z from first definition (4) 5 x 9

both y and z are taken from parameters 58 x 13