#include<iostream>

using namespace std;

int main()

{

    const int unit=;

    int shen_gao;

    cout <<"Please enter your leight in inches:____\b\b\b";

    cin >> shen_gao;

    cout << "It is contains: " << shen_gao / unit << " feet" << ", " << shen_gao % unit << " inches.";

    cin.get();

    cin.get();

    return ;

}

#include<iostream>

using namespace std;

const int F_1 = ;

const double F_2 = 0.0254;

const double F_3 = 2.2;

int main()

{

    int feet;

    int inch;

    double pound;

    double BMI;

    cout << "What's your heights?" << endl;

    cout << "Please enter your heights in feet: ";

    cin >> feet;

    cout << "Please enter your heights in inch: ";

    cin >> inch;

    cout << endl << "What's your pound?" << endl << "Please enter your pound: ";

    cin >> pound;

    BMI = (pound/F_3)/((inch+feet* F_1)*F_2);

    cout << endl << "Your BMI is " << BMI*BMI << ".";

    cin.get();

    cin.get();

    return ;

}

#include<iostream>

using namespace std;

const int Du_fen = ;

const int Fen_miao = ;

int main()

{

    int degrees;

    int minutes;

    int seconds;

    cout << "Enter a latitude in degrees, minutes, seconds:\n" << "First, enter the degrees: ";

    cin >> degrees;

    cout << "Next, enter the minutes of arc: ";

    cin >> minutes;

    cout << "Finally, enter the seconds of arc: ";

    cin >> seconds;

    cout << degrees << " degrees, " << minutes << " minutes, " << seconds << " seconds = "

        << degrees + double(minutes) / Du_fen + double(seconds) / Fen_miao / Du_fen << " degrees";

    cin.get();

    cin.get();

    return ;

}

#include<iostream>

using namespace std;

const int day_hour = ;

const int hour_min = ;

const int min_sec = ;

int main()

{

    int day;

    int hour;

    int min;

    int sec;

    long second;

    cout << "Enter the number of seconds: ";

    cin >> second;

    day = second / min_sec / hour_min / day_hour;

    hour = second / min_sec / hour_min % day_hour;

    min = second / min_sec % hour_min;

    sec = second % min_sec;

    cout << second << " seconds = " << day << " days, " << hour << " hours, " << min << " minutes, " << sec << " seconds.";

    cin.get();

    cin.get();

    return ;

}

#include<iostream>

using namespace std;

int main()

{

    long long peo_of_wor;

    long long peo_of_con;

    cout << "Enter the world's population: ";

    cin >> peo_of_wor;

    cout << "Enter the population of the US:";

    cin >> peo_of_con;

    cout << "The population of the US is " << (double(peo_of_con) / peo_of_wor * ) << "% of the world population.";

    cin.get();

    cin.get();

    return ;

}

#include<iostream>

using namespace std;

int main()

{

    double miles, gallons, kilometers, liter;

    int flage;

    cout << "You have two forms of fuel consumption: " << endl

         << "1- the mile of per gallons" << endl

         << "2- the liter of one hundred kilometer" << endl

         << "Plesase chioce(enter 1 or 2): ";

    cin >> flage;

    if (flage == )

    {

        cout << "Please enter the distance(mile): ";

        cin >> miles;

        cout << "Please enter the gasoline amount(gallon): ";

        cin >> gallons;

        cout << "Wasting a gallon gasoline run " << miles / gallons << " miles." << endl;

    }

    else {

        cout << "Please enter the distance(kilometer):";

        cin >> kilometers;

        cout << "Please enter the gasoline amount(liter):";

        cin >> liter;

        cout << "Wasting gasoline per hundred kilometers is " << liter / kilometers *  << " liters." << endl;

    }

    cin.get();

    cin.get();

    return ;

}

#include<iostream>

using namespace std;

const float One_H_Kilometer_mile = 62.14;

const float Gallon_liter = 3.875;

int main()

{

    float european_style;

    float america_style;

    cout << "Please enter European style fuel consumption: ";

    cin >> european_style;

    america_style = One_H_Kilometer_mile * Gallon_liter / european_style;

    cout << european_style << "/100 km = " << america_style << " mpg";

    cin.get();

    cin.get();

    return ;

}