1: include "std"; 2: // arith 3: print (1 + 1); endl; print (add (1,2)); endl; 4: print (1 - 1); endl; print (sub (1,2)); endl; 5: print (1 * 1); endl; print (mul (1,2)); endl; 6: print (1 / 1); endl; print (div (1,2)); endl; 7: 8: print (1.2 ** 1.2); endl; 9: print (pow (1.2,1.2)); endl; 10: 11: // boolean 12: print (not false); endl; 13: print (lnot false); endl; 14: 15: print (true and false); endl; 16: print (land (true,false)); endl; 17: 18: print (true or false); endl; 19: print (lor (true,false)); endl; 20: 21: // comparison 22: print (1 == 2); endl; print (eq (1,2)); endl; 23: print (1 != 2); endl; print (ne (1,2)); endl; 24: print (1 < 2); endl; print (lt (1,2)); endl; 25: print (1 > 2); endl; print (gt (1,2)); endl; 26: print (1 <= 2); endl; print (le (1,2)); endl; 27: print (1 >= 2); endl; print (ge (1,2)); endl; 28: