東華理工上課用演示程序

1、第一章面向過程與面向?qū)ο?思想對(duì)比#include struct circusdouble ra;double x;double y;double area(circus c)double s;s=3.14*c.ra*c.ra;return s;void main()circus ctemp;printf(please input r:n);scanf(%lf,&ctemp.ra);double s=0.0;s=area(ctemp);printf(area=%lfn,s);#includeclass circusprivate:double ra;double x;double y;publ

2、ic:double area()double s;s=3.14*ra*ra;return s;void setr(double rr)ra=rr;void main()circus ctemp;/cinctemp.r;ctemp.setr(2);double s=ctemp.area();coutsendl;第三章內(nèi)聯(lián)函數(shù)效率 HYPERLINK /zh-cn/library/47238hez(VS.80).aspx /zh-cn/library/47238hez(VS.80).aspx HYPERLINK /developerworks/cn/rational/debug-optimized

3、-code-compiler-option/index.html /developerworks/cn/rational/debug-optimized-code-compiler-option/index.html HYPERLINK /art/201106/270317_all.htm /art/201106/270317_all.htm#include#include#include#includeinline int add() int sum=0;sum+=100;return sum;void main() SYSTEMTIME sys; GetLocalTime( &sys );

4、 printf(%4d/%02d/%02d%02d:%02d:%02d.%03d 星期%1dn,sys.wYear,sys.wMonth,sys.wDay,sys.wHour,sys.wMinute, sys.wSecond,sys.wMilliseconds,sys.wDayOfWeek); for(int i=0;i1000000000;i+) add( ) ; GetLocalTime( &sys ); printf(%4d/%02d/%02d%02d:%02d:%02d.%03d 星期%1dn,sys.wYear,sys.wMonth,sys.wDay,sys.wHour,sys.wM

5、inute, sys.wSecond,sys.wMilliseconds,sys.wDayOfWeek); 第四章1#include #includeusing namespace std;class clockprotected:int h;int m;int s;public:void settime(int hh,int mm,int ss);void showtime();inline void clock:settime(int hh,int mm,int ss)h=hh;m=mm;s=ss;void clock:showtime()couth:m:sendl;void main()

6、clock c1,c2;coutsizeof(c1)endl;c1.settime(14,29,0);c1.showtime();c2.settime(8,0,0);c2.showtime();2組合類構(gòu)造析構(gòu)#include #include#includeusing namespace std;class pointprivate:int x;int y;void setx(int xx)x=xx;void sety(int yy)y=yy;public:/*point()x=0;y=0;*/point(int xx=0,int yy=0);point(const point&pt)x=p

7、t.x;y=pt.y;coutcopy constructor.endl;void setxy(int xx,int yy)setx(xx);sety(yy);int getx()return x;int gety()return y;void showpoint()coutx=x,y=yendl;point()coutpoint des.endl;inline point:point(int xx,int yy)x=xx;y=yy;coutconstructor.endl;class lineprivate:point p1,p2;public:line(point &tp1,point &tp2):p1(tp1),p2(tp2)/p1=tp1;/p2=tp2;coutline cons.endl;line(line & ltemp)p1=ltemp.p1;p2=ltemp.p2;coutline copy cons.endl;double getlen()return sqrt(pow(p1.getx()-p2.getx(),2)+pow(p1.gety()-p2.gety(),2);line