How to create ofstream file with name of variable?

Question

char NAME[256];
cin.getline (NAME,256);
ofstream fout(\"NAME.txt\"); //NAME???????

What i need to do to create file with NAME name?

Answer 1

You could try:

#include 
#include 
#include 

int main() {
    // use a dynamic sized buffer, like std::string
    std::string filename;
    std::getline(std::cin, filename);
    // open file, 
    // and define the openmode to output and truncate file if it exists before
    std::ofstream fout(filename.c_str(), std::ios::out | std::ios::trunc);
    // try to write
    if (fout) fout << "Hello World!\n";
    else std::cout << "failed to open file\n";
}

Some useful references:

• http://en.cppreference.com/w/cpp/string/basic_string
• http://en.cppreference.com/w/cpp/string/basic_string/getline
• http://en.cppreference.com/w/cpp/io/basic_ofstream/basic_ofstream
• http://en.cppreference.com/w/cpp/io/basic_filebuf/open
• http://en.cppreference.com/w/cpp/io/ios_base/openmode