C++实现读取文件，输出单词

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

int main()
{
const char filename[]="f:\\text.txt";
ofstream o_file;
ifstream i_file;
string out_text;

//写
o_file.open(filename);
for(int i =0;i<=12;i++)
{
o_file<< "a" << i <<' ';//将内容写入文本
}
o_file.close();

//读
i_file.open(filename);
if(i_file.is_open())
{
while(i_file>>out_text)
cout << out_text << endl;
}
else
cout<<"打开文件:"<<filename<<"时出错!";

i_file.close();
return 0;
}