#include<iostream>
#include<cmath>
#include<iomanip>
using namespace std;
int main(){cout<<"输入华氏温度"<<endl;double F;cin >> F;double F2C(double F);cout << setprecision(4) << F2C(F);system("pause");
}
/*** 输入一个华氏温度，要求计算摄氏温度* */
double F2C(double F){double result = 5*(F-32)/9;return result;
}