PracticeDev/study_cpp/cpp_primer_source_code/Chapter 17/files.cpp

33 lines
749 B
C++

// files.cpp -- saving to a file
#include <iostream> // not needed for many systems
#include <fstream>
#include <string>
#include <sstream>
int main()
{
using namespace std;
string filename = "file";
// create output stream object for new file and call it fout
int i;
for (i = 0; i < 140; i++)
{
ostringstream outstr; // manages a string stream
outstr << filename << i;
string fname = outstr.str();
ofstream fout(fname.c_str());
if (!fout.is_open())
break;
fout << "For your eyes only!\n"; // write to file
fout.close(); // close file
fout.clear();
}
cout << "i: " << i << endl;
// std::cin.get();
// std::cin.get();
return 0;
}