读取txt中的数据到数组中

读取txt文件，在知道其列数，但不知道其行数的情况下，读取其数据并将其存放在二维数组中。

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main()
{
	string line , word;
	int row=0;
	int num=0;

	ifstream infile( "D:\VC++\readfile\readfile\yhui.txt " );


	if ( !infile )
	{
		cout << "Error: can"t open the file !" << endl ;
		return -1;
		
	}
	
	while ( getline( infile , line ))
	{
		row ++;
	}
 	

	infile.clear();


	int **IVdata;
	IVdata = new int *[row];
	for ( int i =0; i<row; i++)
	{
		IVdata[i]= new int [2];
	}
	
	infile.seekg(ios::beg);
	
	if (infile.eof() )
	{
		cout<<"end of file! "  ;
	}

	while (infile >> i)
	{
		
		IVdata[(int)(num / 2)][num % 2]= i;
		
		num++;
	}

    for (i=0;i<row;i++)
    {
		for (int j=0;j<2;j++)
		{
			cout << IVdata[i][j] <<  "  ";
		}
		cout << endl;
    }
  
    infile.close();
    return 0;

}