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 1;
    }


//    char ch;
//    // get a char
//    while(in.read(&ch, 1)) {  /// or replace with : in.get(ch)
//        cout << ch << endl;
//    }


    // get a line
    char chr[20];
    while(in.getline(chr, 15)){
        cout << chr <<endl;
    }
    in.close();

    return 0;
}

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