Denying machine

A denying machine is a machine that does

• reads input
• set A to 0
• label a
• if input!=0:

• output A
• terminate program

• otherwise:

• A+=1
• goes to label a

Interpreters

><>

i:?v
nl+<;

node.js

a=i=0;while(!(i=+prompt()))a++;console.log(a)

See also

• Machines
• truth-machine
• false machine
• numeric machine