C++温度转换程序

#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main() 
{
	//华氏==摄氏* 9.0/5.0+32
	const unsigned short ADD_SUBTRACT = 32; //c++静态变量的定义 
	const double RATIO = 9.0/5.0;
	
    double tempIn,tempOut;
	char typeIn,typeOut;
	
	std::cout<<"请以【xx.xc】或【xx.cF】格式输入一个温度:\n";
	std::cin>> tempIn >> tempIn;
	std::cin.ignore(100,'\n');
    std::cout<<"\n";
    switch(typeIn)
    {
    	case 'C':
    	case 'c':
    		tempOut = tempIn * RATIO + ADD_SUBTRACT;
    		typeOut = 'F';
    		typeIn = 'C';
    		break;
    	case 'F':
    	case 'f':
    		tempOut = (tempIn-ADD_SUBTRACT) / RATIO;
    		typeOut = 'C';
    		typeIn = 'F';
    		break;
    	default:
    		typeOut = 'E';
    		break;
    	
	}
	if( typeOut != 'E' )
	{
		std::cout<< tempIn << typeIn <<" = "<< tempOut << typeOut <<"\n\n"; 
	}
	else
	{
		std::cout<< "输入错误"<<"\n\n";
	}
	std::cout<<"请输入任何字符结束程序"<<"\n\n";
	std::cin.get();
	return 0;
}