%// 
%// This is an example computing n-th fib number on buil-it "int" type
%// 
%sym int fib(int)
%var int n;

%rule fib(0)    %--> return(1);
%rule fib(1)    %--> return(1);
%rule fib(n)    %--> return(fib(n-1)+fib(n-2));

%%

void cfib(int n) {
	printf("fib(%d) == %d\n", n, fib(n));
}

main() {
	cfib(2);
	cfib(3);
	cfib(4);
	cfib(5);
	cfib(6);
	cfib(10);
}