Existing CAS commands --> Prime discussion

[toml_12953]

(11-07-2019 01:41 AM)compsystems Wrote:  a:=15; [ENTER] 15 // ok
a+=1; [ENTER] increment(a,1) => 16 // ok
increment(a,1) [ENTER] increment(a,1) ? // expected 17

now
a:=16;
b:=20;
a/=b [ENTER] a/▣ ?

textbook => off
a/=b [ENTER] ok

Try

a:=increment(a,1)

Parameters are passed by value, not reference so the variable a can't be changed when used as a parameter.