poj3299 简单数学

 /*
Time:2019.11.30 
Author: Goven
type：简单数学 
err:
ref:
*/
#include<iostream>
#include<cmath>
using namespace std;

double getHumidex(double t, double d) {
    return t + 0.5555 * (6.11 * exp(5417.7530 * ((1/273.16) - (1/(d+273.16))))-10);
}

double getTemperature(double h, double d) {
    return h - 0.5555 * (6.11 * exp(5417.7530 * ((1/273.16) - (1/(d+273.16))))-10);
}

double getDewpoint(double t, double h) {
    return 1 / (1/273.16 - log(((h - t) / 0.5555 + 10) / 6.11) / 5417.7530) - 273.16;
}
int main()
{
    double a, b, t; 
    char c, d;
    while (cin >> c) {
        if (c == 'E') break;
        cin >> a >> d >> b;
        if (c == 'T' && d == 'D') {
            t = getHumidex(a, b);
            printf("T %.1lf D %.1lf H %.1lf\n", a, b, t);
        }
        else if (c == 'T' && d == 'H') {
            t = getDewpoint(a, b);
            printf("T %.1lf D %.1lf H %.1lf\n", a, t, b);
        }
        else if (c == 'D' && d == 'T') {
            t = getHumidex(b, a);
            printf("T %.1lf D %.1lf H %.1lf\n", b, a, t);
        }
        else if (c == 'D' && d == 'H') {
            t = getTemperature(b, a);
            printf("T %.1lf D %.1lf H %.1lf\n", t, a, b);
        }
        else if (c == 'H' && d == 'T') {
            t = getDewpoint(b, a);
            printf("T %.1lf D %.1lf H %.1lf\n", b, t, a);
        }
        else if (c == 'H' && d == 'D') {
            t = getTemperature(a, b);
            printf("T %.1lf D %.1lf H %.1lf\n", t, b, a);
        }
    }
    return 0;
}