c++对txt文件的读取与写入

#include <iostream>
#include <iomanip>
#include <fstream>  

using namespace std;  

int main(){
char buffer[256];
ifstream myfile ("c://a.txt");
ofstream outfile("c://b.txt");  

if(!myfile){
  cout << "Unable to open myfile";
        exit(1); // terminate with error  

}
if(!outfile){
    cout << "Unable to open otfile";
        exit(1); // terminate with error  

}
int a,b;
int i=0,j=0;
int data[6][2];
  while (! myfile.eof() )
  {
     myfile.getline (buffer,10);
    sscanf(buffer,"%d %d",&a,&b);
    cout<<a<<" "<<b<<endl;
     data[i][0]=a;
     data[i][1]=b;
     i++;
  }
myfile.close();
  for(int k=0;k<i;k++){
      outfile<<data[k][0] <<" "<<data[k][1]<<endl;
     cout<<data[k][0] <<" "<<data[k][1]<<endl;
  }  

outfile.close();
return 0;
}  

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/dragonworrior/archive/2009/11/02/4759484.aspx