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ABC
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- Not to be confused with tom7's ABC (compiler), AlPhAbEt, nor Abc.
ABC is an esoteric programming language created by User:Orange. The language is very simple and easy to implement. This language has nothing to do with the real programming language ABC.
Instructions
a - Increment the accumulator b - Decrement the accumulator c - Output the accumulator d - Invert accumulator r - Set accumulator to a random number between 0 and accumulator n - Set accumulator to 0 $ - Toggle ASCII output mode. When on, the c instruction prints the accumulator as an ASCII character. l - Loop back to the beginning of the program. Accumulator and ASCII mode does not reset. ; - Debug. Prints out accumulator as a number and ascii character.
Unknown instructions are treated as NOPs.
Examples
Print out 1337
acaaccaaaac
Simulate a dice throw
aaaaarac
Random phone number generator
ac naaaaaaaaradc naaaaaaaaarc naaaaaaaaarc naaaaaaaaradc naaaaaaaaarc naaaaaaaaarc naaaaaaaaradc naaaaaaaaarc naaaaaaaaarc naaaaaaaaarc
Hello World
$aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaacaaaaaa aaaaaaaaaaaaaaaaaaaaaaacaaaaaaaccaaacnaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aacbbbbbbbbbbbbcaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaacaaaaaaaa aaaaaaaaaaaaaaaacaaacbbbbbbcbbbbbbbbcnaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaac
Count infinitely
acl
Beep infinitely using ASCII code 7 (bell)
aaaaaaa$cn$l
Resources
Interpreters
Java
public class ABC{
public static void interpreter(String code){
int acc=0;
boolean stringMode=false;
for(int i=0;i<code.length();i++){
switch(code.charAt(i)){
case'a':++acc;break;
case'b':--acc;break;
case'c':if(stringMode)System.out.print((char)acc);
else System.out.print(acc);
break;
case'd':acc*=-1;break;
case'r':acc=(int)Math.floor(Math.random()*(acc+1));break;
case'n':acc=0;break;
case'$':stringMode=(stringMode==false)?true:false;break;
case'l':i=-1;break;
case';':System.out.print(acc+" "+(char)acc);
}
}
}
}
Python
import sys
import random
prog = """
aaaaarac
"""
acc = 0
pc = 0
ascii_mode = False
while True:
if prog[pc] == 'a':
acc += 1
elif prog[pc] == 'b':
acc -= 1
elif prog[pc] == 'c':
if ascii_mode:
sys.stdout.write(chr(acc))
else:
sys.stdout.write(str(acc) + ' ')
elif prog[pc] == 'd':
acc *= -1
elif prog[pc] == 'r':
acc = random.randrange(0, acc)
elif prog[pc] == 'n':
acc = 0
elif prog[pc] == '$':
ascii_mode = not ascii_mode
elif prog[pc] == 'l':
pc = 0
elif prog[pc] == ';':
print(acc, chr(acc))
pc += 1
if pc == len(prog):
sys.stdout.write('\n')
break