C++ 文件读取

#include <iostream>
#include <fstream>
#include <string>
 
using namespace std;
 
int main() {
 
    ifstream in;
    in.open("test.txt");
    if(!in){
        cout << "open file failed !"<< endl;
        return ;
    }
 
//    char ch;
//    // get a char
//    while(in.read(&ch, 1)) {  /// or replace with : in.get(ch)
//        cout << ch << endl;
//    }
 
    // get a line
    char chr[];
    while(in.getline(chr, )){
        cout << chr <<endl;
    }
    in.close();
 
    return ;
}

其他操作可参考：http://www.cnblogs.com/flatfoosie/archive/2010/12/22/1914055.html