BMI.cpp

有人要的

// 2007/5/23 0:12:20-1:29:5

//g++ -pipe -o p7 p7.cpp && p7



#include <iostream>

#include <fstream>

#include <iomanip>

using namespace std;



const int debug=0;



int main(){



 const float standard[]={18.5,24,27,30,35};

 const char* name[]={"過輕","正常","過重","輕度肥胖","中度肥胖","重度肥胖"};

 const int sc=sizeof standard/sizeof *standard+1;//6

 int countP[2]={0},countBMI[2][6/*sc*/]={0}; // [sex][standard]

 float sumBMI[2]={0};



 ifstream ifs("bmi.dat",ifstream::in);



 while(ifs.good()){

  int sex=0;

  float weight,height;

  ifs>>sex>>height>>weight;

  if(!sex)continue;

  if(sex<1||sex>2){

   cout<<"資料錯誤: "<<sex<<" "<<height<<" "<<weight<<endl;

   continue;

  }

  //height/=100;

  float BMI=weight/height/height;

  --sex;

  ++countP[sex];

  sumBMI[sex]+=BMI;

  int i=0;

  for(;i<sc-1;i++)

   if(BMI<standard[i])break;

  if(debug)cout<<(sex+1)<<" "<<height<<" "<<weight<<" "<<BMI<<" "<<i<<endl;

  countBMI[sex][i]++;

 }



 ifs.close();



 cout<<endl<<"女性 男性"<<endl

 // http://www.cplusplus.com/reference/iostream/ostream/

 <<setfill('=')<<setw(50)<<""<<endl;

 cout<<"調查人數 "<<countP[0]<<" "<<countP[1]<<endl;

 for(int i=0;i<sc;i++)

  cout<<name[i]<<" "<<countBMI[0][i]<<" "<<countBMI[1][i]<<endl;

 cout<<"平均BMI "<<sumBMI[0]/countP[0]<<" "<<sumBMI[1]/countP[1]<<endl;



 return 0;

}

g++ -pipe -o p7 p7.cpp && p7

資料錯誤:       3       1.9     78.6

資料錯誤:       3       1.9     78.6



女性    男性

==================================================

調查人數        8       10

過輕    1       0

正常    5       5

過重    1       2

輕度肥胖        1       1

中度肥胖        0       1

重度肥胖        0       1

平均BMI 22.0327 25.1954