输入半径 计算圆面积 定义并调用area(r)

#include#includeintmax(inta,intb){if(a>=b){returna;}else{returnb;}}intmain(intargc,constchar*argv[])

#include#definePI3.1415926\x05\x05voidmain()\x05{\x05doubler,s;scanf("%f",&r);s=PI*r*r;\x05printf("A

main(){doubuti,j,v;intput(doubuti,doubutj);couti>>j;v=put(i,j);cout

#include#includeusingnamespacestd;classCircle{doubler,Area,Circumference;public:Circle(doublea=0);Ci

intjie_cheng(intn){if(n==1)return1;returnn*jie_cheng(n-1);}doublefact(intn){doublesum=0;for(inti=1;i

#includeusingnamespacestd;classcircle{private:doubleradius;public:circle(doubler=0.0);voidinput();do

太简单了#includeintmax(inta,intb){intc;c=(a>b)?a:b;returnc;}intmain(){intnum1,num2;scanf("%d\n",&num1);s

PublicSubcommand1_click()dimrasintegerr=val(inputbox("请输入半径"))s=3.1415926*r^2msgbox"圆的面积为:"&sendsu

#includevoidmain(){floatr,d,Cs;cout

dimrassingle,sassingler=inputbox("请输入圆的半径：")s=3.14159*r^2print"圆的面积是：";s

#includeintmain(){doubleR;while(scanf("%lf",&R)!=EOF){printf("%lf\n",R*R*3.14);}return0;}

#include#definepai3.15149256voidmain(){doubler,c,s;printf("pleaseinputr\n")scanf("%lf",&r);printf("c

#includeintfun(inta,intb){return(a+b)*(a+b);}intmain(){inta,b;scanf("%d\n%d",&a,&b);printf("%d\n",fu

#include"stdafx.h"#include#includeusingnamespacestd;classCircle{doubler,Area,Circumference;public:Ci

他们的答案好像都没有输出结果.Dim r, s, c As IntegerPrivate Sub Command1_Click()

#include#includefloatcircleArea(floatr){return3.14*r*r;}voidmain(){floatr,s;printf("inputr=");scanf(

帮你写一个吧CREATEFUNCTIONdbo.RoundArea(@rfloat)returnsfloatasbeginreturnPI()*@r*@rendGO--函数的@r参数就是半径r--测试

constpi=3.1416subcircle（byvalrassingle,Lassingle,aassingle,VASSINGLE）L=2*pi*rA=pi*r*rV=4/3*r*r*r*pie

子函数可以就写成一个面积公式啊算面积直接调用*6体积直接调用*棱长

PublicFunctiontrangle(aAsDouble,bAsDouble,cAsDouble)AsDoubleIfa+bDimsAsDoubles=0.5*(a+b+c)a=s-ab=s-b