课程设计——c++中读取txt文件

#include <iostream>#include <string>#include <fstream>using namespace std;

const int Money = 10000;struct Patrons{	string name;	double money;};

int main(){	ifstream inFile;	inFile.open("demo6_9.txt");	if(!inFile.is_open())	{		cout<<"could not open the file \"demo6_9\"\n";		cout<<"program terminating!\n";		exit(EXIT_FAILURE);	}

	int num;	inFile>>num;	cout<<"the number of Patrons is :"<<num<<"."<<endl;	inFile.get();  .//读取换行符//	string name;//	int money;	Patrons *pt = new Patrons[num];	if(inFile.is_open())	{		int i;		for(i=0;i<num;i++)		{	//		inFile>>name;	//		inFile>>money;	//		pt[i].name = name;	//		pt[i].money = money;			getline(inFile,pt[i].name);  //读取一行输入			(inFile>>pt[i].money).get();		}

		int k=0;		cout<<"Grand Patrons:"<<endl;		for(i=0;i<num;i++)			if(pt[i].money >= Money)			{				cout<<pt[i].name<<" "<<pt[i].money<<endl;				k++;			}			if(k==0)			cout<<"none.\n";

		cout<<"Patrons:"<<endl;		if(k==num)			cout<<"none.\n";		else		{			for(i=0;i<num;i++)				if(pt[i].money < Money)					cout<<pt[i].name<<" "<<pt[i].money<<endl;		}	}

	inFile.close();	delete [] pt;	system("pause");	return 0;

}

这是我以前做的练习，你看看吧，应该有所帮助~我的TXT格式是4Sam Stone2000Freida Flass100500Tammy Tubbs5000Rich Raptor55000至于你说的列确定，行不确定，你也可以用类似cin的方法读取~想想你cin怎么用的，ifstream就这么用~