printn(n,b) {
extrn putchar;
auto a;
if(a=n/b) /* assignment, not test for equality */
printn(a, b); /* recursive */
putchar(n%b + '0');
}
You'd think we'd have a much better way of expressing the details of software, 50 years later? But here we are, still using ASCII text, separated by curly braces.