输入圆的半径r,求其面积并输出 编程

#includeintmain(){floatr,s,l;scanf("%f",&r);s=3.14*r*r;l=2*3.14*r;printf("s=%f,l=%f\n",s,l);return0;

CLEARSETTALKOFFINPUT"请输入半径:"TORL=2*PI()*RS=PI()*R*R"半径为R的圆的周长为:",L"半径为R的圆的面积为:",SSETTALKON

voidmain(){floatr,s,l;floatpi=3.1415;printf("输入一个圆的半径:\n");scanf("%f",&r);if(

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

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

function[SV]=sphere(R)%定义函数S=pi*R^2;%求圆的面积V=4/3*pi*R^3;%求求的体积调用方法[ab]=sphere(1)

main(){intn,a;scanf("%d",&n);a=n%3;printf("%d%%3=%d\n",n,a);}

#include#includeintmain(){inti,j,a[10][10],min,ri,rj,b[10][10];for(i=0;ifor(j=0;jscanf("%d",&a[i][j]

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

#include#defineMianji(x)Pi*r*r#definePi3.1415926intmain(){\x09floatr;\x09printf("请输入半径r：\n");\x09sca

要求用什么语言啊?求简单写个在matlab上跑的：r=input('r=?');D=2*pi*rS=pi*r*r再问：c语言呀哥哥再答：#include#includemain(){floatpi=3

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

面积最大时是正方形,对角线等于直径=2r,边长=√2r,周长=4√2

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

#includemain(){inti;floatr;floats;floath;floatv;printf("请输入半径：\n");scanf("%f",&r);printf("如果是圆请输入1,如

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

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

#...intr,b,dsin

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

用C语言写一段：#include“stdio.h”#definePI3.1416voidmain（）{intr；floatc,s；scanf("%d",&r);c=PI*2*r；s=PI*r*r；pr