摄氏温度与华氏温度的相互转换（含异常输入判断）

//摄氏温度与华氏温度的转换，转换公式c=5/9(f-32) #include<iostream> using namespace std; int main() { float num; char flag; cout << "请输入一个华氏温度或者摄氏温度（注意尾部带f/c或F/C，例：23C，55F)"; cin >> num >> flag; float cels; float fahr; if (flag == 'c' || flag == 'C') { fahr = (num - 32) * 5 / 9; cout << "对应的华氏温度为：" << fahr; } else if (flag == 'f' || flag == 'F') { cels = (num + 32) * 9 / 5; cout << "对应的摄氏温度为：" << cels; } else { cout << "输入错误，请重新输入！" << endl; } return 0; }