dialog.h #ifndef DIALOG_H #define DIALOG_H #include <QtWidgets/QDialog> #include <QtWidgets/QLabel> #include <QtWidgets//QLineEdit> #include <QtWidgets/QPushButton> #include <QtWidgets/QGridLayout> const static double PI = 3.…

代码: r=29 area = 3.1415*r*r print(area) print("{:.2f}".format(area)) 结果:…

#include <stdio.h>void main(){ int a,b,c,y,g,f; printf("圆柱底面的半径,圆柱的高"); scanf("%d %d",&a,&b);    c=2*3.14*a; y=3.14*a*a; g=c*b; f=2*y+g;    printf("圆柱底面的周长为%d",c); printf("圆柱底面的面积为%d",y); printf("…

#!/bin/usr/env python#coding=utf-8'''完成一段简单的Python程序,用于实现计算圆面积,三角形面积,长方形面积'''flag=Truewhile flag: pi=3.1415926 print("请按照选择输入:c,r,t的大小写分别用来计算圆,矩形以及三角形的面积") print("输入c或者C是用来计算圆的面积") print("输入r或者R是用来计算长方形的面积") print("输入t或者…

Description The city of M is a famous shopping city and its open-air shopping malls are extremely attractive. During the tourist seasons, thousands of people crowded into these shopping malls and enjoy the vary-different shopping. Unfortunately, the…

package com.ll; public class Class3 {     private String name;     private int age;     private int no;     private double  r;//声明圆的半径     public Class3(String a,int b,int c){                 name=a;         age=b;         no=c;//带参数的构造方法            …

#include<stdio.h> #define PI 3.142 int main() { int r; float area; ; r <= ; r++) { area = PI * r * r;/*计算圆的面积*/ )/*判断圆的面积是否大于100*/ break;/*提前结束循环*/ printf("r=%d,area=%.2f\n", r, area); } ; }…

C++基础,while循环与if判断实现的计算图形面积 1 #include <iostream> 2 3 int main() { 4 while (true){ 5 int input; 6 int r; 7 int len1; 8 int len2; 9 std::cout << "请输入您要计算何种类型图形(1: 圆形,2:矩形 , 0:退出):" << std::endl; 10 std::cin >> input; 11 if…

#给一个半径,求圆的面积和周长,圆周率3.14 r = int(input('r=')) print('area='+str(3.14*r*r)) print('circumference='+str(2*3.14*r))…

#include <stdio.h> #include <math.h> #include <string.h> char explode( char * str , char symbol ); double distance ( int x1 , int y1 , int x2 , int y2 ); // 求平面上2个坐标点的直线距离 double circle_area( double radius ); // 求圆面积. radius 半径 double tw…