Doesn't fstream support dynamic creation of files
Question
I'm trying to create files dynamically and it seems like there is no way with fstream. Is there actually any?
#include <iostream>
#include <fstream>
using namespace std;
int main () {
for (int i = 0; i<2; ++i){
std::ofstream outfile
outfile.open ((char)i+"sample_file.txt"); // something like this. numbers appended to the filename
outfile << i;
outfile.close();
}
}
Solution
If you mean with a name created at run time, then yes, but you have to build your name in a valid way. E.g. (after #include <sstream>
):
std::ostringstream fname;
fname << "sample_file_" << i << ".txt";
outfile.open(fname.str().c_str());
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