c 定义一个圆类circle 求面积和周长
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classCircle{private:intm_nR;public:Circle(intnR){m_nR=nR;}floatOutputF(){return2*3.1415926*(float)m_
#include"stdio.h"constdoubleP=3.14;classCircle{public:virtualdoubleArea();voidR(doubles);doublegetr(
#include"stdio.h"#include"graphics.h"#definePI3.1415926;classcircle{public:voidset_x(){scanf("%d%d%d
namespaceEX1_4{publicclassshape{publicdoublePI=3.14;}publicclassRectangle:shape{publicintx,y,s,l;pub
classcircle{public:circle(doubleradius):_radius(radius){}~circle(void);private:double_radius;public:
classCircle{public:Circle(intnr){r=nr;}Circle(){}public:intr;intArea(){return3.14*r*r;}};classB{publ
#includeusingnamespacestd;constdoublePI=3.141592653;classPoint{public:\x05doubleX;\x05doubleY;public
计算出圆的周长和面积functioncircle(r){this.r=rthis.Area=Areathis.Circum=Circum}functionCircum(){return(3.14*2*
classcircle{public:circle(floatr=0){this->r=r;}floatarea();{return3.14*r*r;}private:floatr;};再问:再问:为
classcircle{floatradius;floatarea;public:circle(floatr){radius=r;}floatgetarea(void){area=3.14*radiu
把这三个类分别放到三个.java文件中,然后编译运行即可.publicclassCircle{privatedoubler;publicCircle(doubler){this.r=r;}public
2种差不多的方法,自己在VC6.0上面试试#include<iostream>usingnamespacestd;#definepi3.14classcircle{public:circl
#includeusingnamespacestd;classCircle{public:Circle(doubler=0):radius(r){}doubleArea(){return3.14*ra
classCircle{intr,c,s;c=circle(r);s=square(r);}intcircle(intr){intc;c=2*3.1415926*r;return(c);}intsqu
#includeusingstd::cout;usingstd::endl;#definePI3.14159structpoint{\x09intx,y;\x09point(int_x,int_y):
publicclassCircle{privatedoubleradius;publicCircle(doubler){this.radius=r;}publicstaticvoidmain(Stri
#include <iostream>using namespace std;const double PI = 3.
#include#definePI3.14159usingnamespacestd;classcircle{private:doubleRadius;public:voidjiandan();};vo
根据题意实现代码如下:#include <iostream>#include <cmath>#include <string>usin