java 编写程序,从键盘输入圆的半径,计算并在屏幕输出该圆的周长和面积.

importjava.io.*;importjava.util.*;classMain{publicstaticintgcd(intm,intn){while(true){if((m=m%n)==0)

#include#includeintmain(){\x09doublex;\x09scanf("%lf",&x);\x09printf("%lf\n",sqrt(x));\x09return0;}

importjava.util.Scanner;publicclassTest{publicstaticvoidmain(Stringagrs[]){Scannera=newScanner(Syste

importjava.util.Arrays;importjava.util.Scanner;publicclassDataCompare{\x09publicstaticvoidmain(Strin

import java.util.Scanner;  public class TestJT {  public&nbs

#includeintfun(intn){inti,j;for(i=2;i

本人初学,答的不好的地方请见谅,程序代码如下：importjavax.swing.JOptionPane;publicclassyuan{publicstaticvoidmain(Stringargs

#include "stdio.h"void main(){  int n,sum=0;  printf(&q

1：次数最多2：在次数最多的基础上,数值最大_______________________________________________以下为程序：#include//设置最大值#defineMAX

代码如下：#includevoidmain(){floata,b,c,d,max;printf("请输入四位数字：\n");scanf("%f%f%f%f",&a,&b,&c,&d);max=a;if

你写的scanf就提出了要求的输入是“数a”“逗号”“数b”,你既然没有给出逗号,那就一直没有给b赋值,你也没有给b一个初始化的值,那么得出的结果就是一个随机数.可以把逗号去掉,这样两个数字之间用个空

packagea1;importjava.util.Scanner;publicclassTest1{publicstaticfloatzhouchang(floatx,floaty){return2

#includevoidmain(){\x09inta,b,c,min;\x09scanf("%d%d%d",&a,&b,&c);\x09min=a;\x09if(min>b)min=b;\x09if

importjava.util.Scanner;publicclassCircle{    publicstaticvoidmain(String[]args)

#include#include#includeintmain(){inti,a[200]={0};charc;for(i=0;;i++){scanf("%c",&c);if(c=='\n')brea

importjava.util.Scanner;publicclassTest{publicstaticvoidmain(String[]args){System.out.print("请输入第一个整

（法1）#includeusingnamespacestd;#definePI3.1415926classCircle{doubler;public:Circle(doubleR=0){r=R;}vo

#include#includevoidmain(){intn,s,j,i;printf("inputn(n

#include#defineT3.14main(){floatR,s;printf("请输入半径R的值：");scanf("%f",&R);s=T*R*R;printf("面积为:%g",s);ge