9999

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9999 is joke esoteric programming language which working in 9999 year.

language overwiew

9999 is counter which can work if now year==9999. 9999 using this commands:

Command	Description
,	Outputs the accumulator as an ASCII character
.	Outputs the accumulator as number
-	Decrements the accumulator by 1
+	Increments the accumulator by 1

implementation

Python

n=0
import datetime
from datetime import datetime
now = datetime.now()
if now.year == 9999:
    c=input()
    for ch in c:
        if ch=="+":n+=1
        if ch=="-":n-=1
        if ch==".":print(n)
        if ch==",":print(chr(n))
        else:print("SyntaxError")
else:
    print("YearError")