A、若只在主函數(shù)中對(duì)函數(shù)f進(jìn)行說(shuō)明,則只能在主函數(shù)中正確調(diào)用函數(shù)f
B、若在主函數(shù)前對(duì)函數(shù)f進(jìn)行說(shuō)明,則在主函數(shù)和其它函數(shù)中都可以正確調(diào)用函數(shù)f
C、對(duì)于以上程序,編譯時(shí)系統(tǒng)會(huì)出提示出錯(cuò)信息:提示對(duì)f函數(shù)重復(fù)說(shuō)明
D、函數(shù)f無(wú)返回值,所以可用void將其類型定義為無(wú)值型