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func operators()
print 3 = 3;
print (3+5) = 8;
print (5-3) = 2;
print (3*5) = 15;
print (3&5) = 1;
print (3|5) = 7;
print (3<5) = 1;
print (5<3) = 0;
print (3=5) = 0;
print (5=5) = 1;
print (!3) = 0;
print (!0) = 1;
print (-3) = (0-3);
return 0;
end func;
func params(a, b, c)
print a = 3;
print b = 5;
print c = 7;
return 9;
end func;
func locals(a)
var b;
var c;
b:=a+1;
c:=b+1;
a:=c+1;
return a;
end func;
func inc(x)
return x+1;
end func;
func sign(n)
var r;
if (n<0) then
r:=-1;
else
if (0<n) then
r:=1;
else
r:=0;
end if;
end if;
return r;
end func;
func recfac(n)
var r;
if (n<1) then
r:=1;
else
r:=recfac(n-1)*n;
end if;
return r;
end func;
func itfac(n)
var r;
r:=1;
while (0<n) do
r:=r*n;
n:=n-1;
end while;
return r;
end func;
func testfac()
var i;
i:=0;
while (i<10) do
print itfac(i) = recfac(i);
i:=i+1;
end while;
return 0;
end func;
func main()
operators();
print params(3,5,7) = 9;
print locals(3) = 6;
print (inc(1)+inc(inc(inc(3))))=8;
print sign(5) = 1;
print sign(0) = 0;
print sign(-5) = (-1);
print itfac(5) = 120;
testfac();
return 0;
end func;
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