?10%-3 -2

?-10%3 2

?-10%-3 -1

?max(9,4,1) 9

?max('汽车','飞机','轮船') 汽车 ?min ('汽车','飞机','轮船') 飞机 a="河南省新乡市长垣县芦岗乡" ?len (a) 24

?len(a)*2 48

?len(a)**2 576.00

?({^1990-8-1}-{^1990-8-16})*2 -30 a="what do you mean? i don't understand your words "

?upper (a) WHAT DO YOU MEAN ?I DON’T UNDERSTAND YOUR WORDS b="OH,MY GOD! "

?LOWER(b) oh,my god！

a=" "

?len(a) 1

b=" "

?len (b) 8

?"my"+space(8)+"name" my