• IO 输入流操作


    //get.h
    #ifndef GET_H
    #define GET_H
    #include <iostream>
    std::istream& get(std::istream& in);
    
    #endif
    

     

    //get.cpp
    #include "get.h"
    std::istream& get(std::istream& in){
    	int ival;
    	while (in>>ival , !in.eof())//遇到文件结束符之前一直读入数据
    	{
    		if (in.bad())//系统级故障
    			throw std::runtime_error("io stream corrupted!");
    		if (in.fail()){//可恢复错误
    			std::cerr << "bad data, try again";
    			in.clear();//恢复流
    			in.ignore(200, ' ');//跳过类型非法的输入项。(跳过200个字符或遇到空格或者是文件结束为止)
    			continue;
    		}
    		std::cout << ival << " ";
    	}
    	in.clear();
    	return in;
    

      

    #include <iostream>
    #include "get.h"
    using namespace std;
    
    int main(int argc, char **argv)
    {
    	double dval;
    	get(cin);
    	cin >> dval;
    	cout<<"yyy" << dval << endl;
    
    	cout << endl;
    	system("pause");
    	return 0;
    }
    

      

     

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  • 原文地址:https://www.cnblogs.com/beihaidao/p/5937508.html
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