#include???
using?namespace?std;??
const?double?x1=0.3?x2=0.8;?//式子中出現的兩個常數定義為全局常變量，方便，易維護??

double?f（double）;?//先聲明??
int?main（）??
{???double?x;???cout<<“請輸入x的值：“;??
?cin>>x;??
?cout<<“解得:?“<return?0;??
}??
double?f（double?x）??
{?????int?a;??
????if（x????????a=0;??
????}????else?if（x<=x2）{
????????a=（x-x1）/（x2-x1）;??
????}????else{??
????????a=1;??
????}??
????return?a;???????//返回值??
}

?屬性????????????大小?????日期????時間???名稱
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?????文件????????498??2013-06-12?09:58??source.cpp

?????文件?????184268??2012-05-29?23:40??dictionary.txt

?????文件???????4350??2013-06-11?21:48??salary.txt

?????文件???????1585??2013-06-11?21:55??score.dat

-----------?---------??----------?-----??----

???????????????190701????????????????????4