依據lesson5_2,請多輸出一行

[roberthsu2003]

姓名:徐國堂
身高:183cm
體重:81kg
BMI:24.187
您的狀況:過重
您必需最少減重xx公斤,才可以至標準,或加重多少,才可以至標準

[a86685566]

main.cpp

#include <iostream>
#include "people.h"
using namespace std;

int main() {
  People p1;
  p1.name = "正常人阿民";
  p1.height = 171;
  p1.weight = 66;
  p1.profile();
  People p2("過瘦阿賢", 180, 50);
  p2.profile();
  People *p4 = new People("一個大胖子", 170, 170);
  p4->profile();
}

people.h

#include <iostream>
#include <math.h>
using namespace std;

/*
依據lesson5_2,請多輸出一行
您必需最少減重xx公斤,才可以至標準,或加重多少,才可以至標準

算式：
// 正常值的BMI * (身高2)公尺   可得此身高正常值的體重
*/

class People{
  public:
  string name;
  double weight;
  double height;
  People(){}
  People(string name, double height, double weight){
    this -> name = name;
    this -> height = height;
    this -> weight = weight;
  }
  void profile(){
    cout << "姓名：" << name << endl;
    cout << "身高：" << height << endl;
    cout << "體重：" << weight << endl;
    cout << "BMI：" << bmi() << endl;
    cout << "狀況：" << status(bmi()) << endl;
    cout << remind(status(bmi()),weight,height) << endl;
    cout << "＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝" << endl;
  }

  string remind(string text,double weight,double height){
    if(text == "正常範圍"){
      return "很棒，繼續保持！";
    }else{
      string text2 = "降低 ";
      if(text == "體重過輕") text2 = "增加 "; // 依據情況將文本改為增加、降低
      return "你需要再" + text2 + 
        to_string(normalbmimax(weight,height)) + 
        "～" +
        to_string(normalbmimin(weight,height)) + 
        " 公斤，BMI才可達正常範圍";
    }
  }
//計算該身高BMI為24時，時的正常體重
  double normalbmimax(double weight,double height){
    double bmimax = 24;
    double max = bmimax * pow(height / 100,2);
    return abs(weight - max); //將體重-正常體重 得到差值，使用abs取絕對值，以處理體重過低時的負值
  }
//計算該身高BMI為18.5時，時的正常體重
  double normalbmimin(double weight,double height){
    double bmimin = 18.5;
    double min = bmimin * pow(height / 100,2);
    return abs(weight - min);
  }

  double bmi(){
    return weight / pow(height / 100, 2);
  }

  string status(double bmi){
    if(bmi < 18.5){
      return "體重過輕";
    }else if(bmi < 24){
      return "正常範圍";
    }else if(bmi < 27){
      return "過重";
    }else if(bmi < 30){
      return "輕度肥胖";
    }else if(bmi < 35){
      return "中度肥胖";
    }else{
      return "重度肥胖";
    }
  }
};

[9999erin]

#include <iostream>
#include <math.h>
using namespace std;

class People {
public:
  string name;
  int weight;
  int height;
  People() {
    // cout << "目前執行此建構式" << endl;
  }

  People(string n, int w, int h) {
    name = n;
    weight = w;
    height = h;
  }

  void profile() {
    cout << "姓名:" << name << endl;
    cout << "身高:" << height << "cm" << endl;
    cout << "體重:" << weight << "kg" << endl;
    cout << "BMI:" << bmi() << endl;
    cout << "您的狀況:" << status(bmi()) << endl;
    cout << fun(bmi()) << endl;
  }

  double bmi() { return weight / pow(height / 100.0, 2); }

  string status(double bmi) {
    if (bmi < 18.5) {
      return "體重過輕";
    } else if (bmi < 24) {
      return "正常範圍";
    } else if (bmi < 27) {
      return "過重";
    } else if (bmi < 30) {
      return "輕度肥胖";
    } else if (bmi < 35) {
      return "中度肥胖";
    } else {
      return "重度肥胖";
    }
  }
string fun(double bmi) {
        if (bmi < 18.5) {
          return "至少增加" + to_string(18.5-weight) + "公斤才可以至標準";
    }   else if (bmi > 24 && bmi < 35) {
          return "至少減重" + to_string(weight- 24) + "公斤才可以至標準";
    }else{

      return "";

   }
};

int main() {
  People p1;
  p1.name = "徐國堂";
  p1.height = 183;
  p1.weight = 81;
  p1.profile();

  cout << "===================\n";
  People p2("張xx", 69, 170);
  p2.profile();

  cout << "===================\n";
  People p3("王xx", 65, 150);
  p3.profile();

  cout << "===================\n";
  // new,傳出的是指標變數
  People *p4 = new People("陳xx", 92, 175);
  p4->profile();