string operator字符串: alphabetic string; character ...字符串運(yùn)算: string operations串運(yùn)算符: string operator字符串串連運(yùn)算子: string concatenation operator表字符串運(yùn)用那一進(jìn)制(如十六進(jìn)制): date.tostring下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯