IO读取本地文件并创建一个新文件

#include "../../std_lib_facilities.h"

struct Reading{
	int hour;
	double temperation;
	Reading(int h, double t):hour(h),temperation(t) {};
};


void main()
{
	cout<<"please enter input file name:"<<endl;
	string name;
	cin>>name;
	ifstream ifst(name.c_str());
	if(!ifst) error("can't open input file ",name);
	
	cout<<"Please enter output file name:";
	cin>>name;
	ofstream ofst(name.c_str());
	if(!ofst) error("can't open input file ",name);

	vector<Reading> temps;
	int hour;
	double temperature;

	while(ifst>>hour>>temperature )
	{
		if(hour <0 || hour > 23) error("hour out of range");
		temps.push_back(Reading(hour, temperature));
	}

	for(int i = 0; i<temps.size(); ++i)
	{
		ofst<<'('<<temps[i].hour<<','<<temps[i].temperation<<")\n";
	}

	keep_window_open();

}