在C语言中,输入半径计算圆的周长和面积
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#includemain(){\x09floatS(floatr);\x09floatr;\x09printf("inputr:");\x09scanf("%f",&r);\x09printf("圆面
#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;
法一:charch;ch=getch();if(ch>='A'&&ch='a'&&ch
#include#definepi3.141592653intmain(){doubler;printf("输入半径:\n");scanf("%lf",&r);printf("周长为:\n");pri
#definePI3.1416//后面不需要;#include"stdio.h"//注意关键字之间要有空格intmain(){floatr,s,c;scanf("%f",&r);c=2*PI*
在输入半径的时候,语句改成scanf("%d",&r);不过你最好将半径定义成float型变量,格式的问题
例如:2的3次方#include#includeintmain(intargc,char*argv[]){printf("%f\n",pow(2,3));//第一个参数是底数(double),//第二
#includeintfun(intn){ints=0;while(n){s+=n%10;n=n/10;}returns;}main(){intn;scanf("%d",&n);printf("%d\
#include"stdio.h"#definePI3.14159main(){floatr,V,S;printf("输入球体半径:");scanf("%f",&r);V=PI*4*r*r*r/3;S
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
是输入结束不会还是取整数小数不会?再问:都不会,完全没有思路,只有寻求帮助了再答:������֪��˼·����ֱ��Ҫ����再问:ֱ��Ҫ����ϣ������C++��д��˳��˵������
#includevoidasum(doublea[3][3],doubleb[3][3],doublec[3][3]){inti,j;for(i=0;i
#includeintmain(){doubleR;while(scanf("%lf",&R)!=EOF){printf("%lf\n",R*R*3.14);}return0;}
#includeintmain(){intr=0;floata=0,l=0;scanf("%d",&r);a=r*r*3.14;l=r*2*3.14;printf("面积:%f,周长:%f",a,l)
#include#include#defineE2.7182voidmain(void){floatx;floaty;scanf("%d",&x);if(x>=-1)y=pow(x,2)+1;
#include#include#definePI3.14159intmain(void){floatr,h,V=0;printf("Pleaseinputr=h=\n");loop:scanf("%
#include#include#includevoidmain(){doublex,d,val;scanf("%lf",&d);scanf("%lf",&x);val=sin(d*3.1415926
#include"stdio.h"#definePI3.141592653//定义πintmain(void){floatC,A,V,r;printf("请输入半径:");//提示输入scanf("%
自己定义#definePI3.1415926f以后用到圆周率的时候直接使用PI这个名称就可以了