Shape-Machine

Shape-Machine is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

Task

1. Get user input and store in a variable/stack
2. Add 3 to the input and multiply it by 0.86 and then output it
3. Now reapeat the previos step

See Also

• Esolangs.org page

Python

a=int(input())
while True:
    a += 3
    a *= 0.86
    print(a)

Raku

my $input = (+prompt()).FatRat;
my $previous = 0.FatRat;
my $count;
my $places = 36;
loop {
    $input += 3;
    $input ×= .86;
    last if $previous.substr(0,$places) eq $input.substr(0,$places);
    ++$count;
    say ($previous = $input).substr(0,$places);
}
say "$count repetitions";

Output with a 4 fed in at the prompt:

4
6.02
7.7572
9.251192
10.53602512
11.6409816032
12.591244178752
13.40846999372672
14.1112841946049792
14.715704407360282112
15.23550579032984261632
15.6825349796836646500352
16.066980082527951599030272

...
many, many lines omitted
...

18.428571428571428571428571428571416
18.428571428571428571428571428571418
18.428571428571428571428571428571419
18.428571428571428571428571428571420
18.428571428571428571428571428571421
18.428571428571428571428571428571422
18.428571428571428571428571428571423
18.428571428571428571428571428571424
512 repetitions