Ackermann Function

ackmann.c

#include <stdio.h>

int ack(int m, int n)
{
    int ans;
    if (m == 0) ans = n + 1;
    else if (n == 0) ans = ack(m - 1, 1);
    else ans = ack(m - 1, ack(m, n - 1));
    return (ans);
}

int main (int argc, char ** argv)
{
    int i, j;
    for (i = 0; i < 6; i++)
        for (j = 0; j < 6; j++)
	    printf("ackerman (%d, %d) is: %d\n", i, j, ack(i, j));
}

ackmann.js

const ackmann = (m, n) =>
  m === 0 ?
    n + 1 :
    n === 0 ?
      ackmann(m - 1, 1) :
      ackmann(m - 1, ackmann(m, n - 1))