
AJLogo Math
This describes Math in AJLogo.
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Cheers,
Arnie
The math in AJLogo is in prefix notation.
= a 55 is an example of assignment using prefix notation
= a + 33 22 adds 22 to 33 and assigns the value to a
++a increments a (adds 1 to a)
Generally all Java math is available (including *,/,trig, exp, int,
rounded int, ceiling, floor, random)
* Flow control
if, elsif, else example:
if(a){ pr "a is true" }elsif(b){ pr "a is false and b is true" }
else { pr "a and b are false" }
while loop example:
while (<a 5){ pr "a is less than 5" = a + a 2 }
for loop example:
for(== a 0;< a 5; ++a){ pr "a is less than 5" }
The plus sign in is:"+a is used to join the string and a together
for the print.
rp repeat mentioned earlier this is AJLogo's simple loop method,
let's use it for a little more complicated example:
cs =a 10 rp 360[ fd a rt 10 +=a .1 ]
This will draw a spiral.
