C语言编写函数求圆面积

#include#definePI3.1415926doublearea(doubler){returnPI*r*r;}doubleperimeter(doubler){return2*PI*r;}i

#includemain(){\x09floatS(floatr);\x09floatr;\x09printf("inputr:");\x09scanf("%f",&r);\x09printf("圆面

#include#includefloatarea(float,float,float);voidmain(){\x09floata,b,c,result;\x09printf("输入三角形的三边:\

#includeintisprime(inti);//大小写错误voidmain()//省略是默认返回值为int{intnumber;printf("Pleaseinputanumbertotesti

#includedoublecalRectArea(doubledWidth,doubledHeigh){returndWidth*dHeigh;}voidmain(){doublea,b,mul;s

#includeintmain(void){\x09\x09doublex,y=0;\x09printf("inputx");\x09scanf("%lf",&x);\x09if(x>-1)\x09{

#include#includemain{inta,b,c;intp,s;scanf("%d%d%d",&a,&b,&c);p=(a+b+c)/2;if(a+b>c&&a+c>b&&b+c>a){s=

#includemain(){doublex,y;scanf("%lf",&x);if(x

#include <stdio.h>#include <math.h>//double sin(double x);#define&nb

#include <stdio.h>float area(float r){  return 3.14159 *&nb

printf（“请输入上底下底高：”）；这句的分号错了,应该是;而不是；另外,你追问楼上那位的代码里,也是全角半角符号的错误,还有后面printf("所求摄氏温度:")：,应该是分号;,不是冒号：初学

#include<stdio.h>#define Pi 3.14159double Square(double r){  &nb

#includeintgetArea(intlen){\x09returnlen*len;}intmain(){\x09intn;\x09intarea;\x09\x09printf("请输入边长:\

.就知道一个周长,怎么求面积啊?N种可能啊满意请采纳

#include//doubleellipse_area(doublea,doubleb);intmain(void){doublea,b;doubles;printf("请输入椭圆的半长轴a,半短轴

假设知道三角形的三边长为a,b,c.程序如下：#include#includedoublearea(doublea,doubleb,doublec){doublearea=0,s=0;s=(a+b+c

#include"stdio.h"#definePI3.141592653//定义πintmain(void){floatC,A,V,r;printf("请输入半径：");//提示输入scanf("%

平面是怎么个表达法图像么是以二维矩阵存储么再问：这个不知道啊你就看着题目办吧再答：那两个点有x,y坐标吧,point1，point2分别为点1和点2传入4个坐标值返回距离注意要有#includedou

#include#include#includeusingnamespacestd;intmain(){intr=15,h=3;doublec=2*3.14*r;doubles=pow(r,2)*3.

两个数,只可能是底和高吧.#includevoidmain(){floatSide,Height;//底和高floatSpace;printf("pleaseinputSideanditsHeight