Question

Is it possible in simple c++ to ask an user to enter a path and manipulate this same file? Does anyone know a website to get to know more about this? Google wasn t that easy this time.

#include <iostream>
#include <fstream>

int main()
{
    using namespace std;


    char * b = 0;

    cin >> b;

    cout << b;

    const char * c = b;

    ofstream myfile;
    myfile.open (c);
    myfile << "Writing this to a file.
";
    myfile.close();

    return 0;
}

Answer 1

使用 char__/code> 代替 char_%/code> 使用 std:::string :



#include <string>

std::string b;


正试图通过NULL 指示器进行写作。

如果不是 C++11, 那么您需要使用 < code> b. c_str ()  才能通过 < code> myfiles.open ()  :

myfile.open(b.c_str()); // Or ofstream myfile(b.c_str());
if (my_file.is_open())
{
    myfile << "Writing this to a file.
";
    myfile.close();
}

友情链接