编辑代码

#include <iostream>
using namespace std;

double convertC_F(int,double);
int main() {
    int select;
    double degrees;
      cout<<"选择一项,输入1或者2"<<endl;
      cout<<"1：摄氏度转为华氏度"<<endl;  
      cout<<"2：华氏度转为摄氏度"<<endl;
      cin>>select;
    if(select==1){
        cout<<"输入摄氏温度数值："<<endl;
            cin>>degrees;
          cout<<"输出华氏温度数值："<<convertC_F(select,degrees)<<endl; }
       
          else if(select==2){
               cout<<"输入华氏温度数值："<<endl;
            cin>>degrees;
          cout<<"输出摄氏温度数值："<<convertC_F(select,degrees)<<endl; 
          }
else cout<<"选择错误！"<<endl;
} 
  
  
double convertC_F(int aaa,double nnn){
    if(aaa==1)
    return 1.80*nnn+32.00;
    else 
    return (nnn-32.00)/1.80;
}