lonely-tiger/tests/calc/add

print 1;
print 2 + 3;
print 3 + 4 + 5;
print 6 + 7 + 8 + 9;
print 3.5 + 5.5;
print 4.0 + 1.0;
print 1.0 + -2.0;
print 6 + -7 + 8 + -9;