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dk32321

creating multiple text files

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in a for loop i want to creat multiple text files but i just can figure it out i used this code but it olny creates one char* basename = "textfile"; for(int q = 1; q < 1002;q++) { cout << "Creating text file" << q <<"...." <<endl; for( int i = 0; i < 1000;i++) { char filname [256] = {0}; sprintf(filname,"%s_%i.txt",basename,i); poop.open(filname); pee.open(filname); } } poop.close(); pee.close(); } but it wont work

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std::string basename = "textfile";
std::string extension = ".txt";
std::ofstream file;
for (int fileNumber = 0; fileNumber < numberOfFiles; ++fileNumber)
{
std::string filename = basename + '_' + boost::lexical_cast< std::string >(fileNumber) + extension;
file.open(filename.c_str());
file.close();
}

Enigma

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Because saving a few cycles there is going to be so critical when the entire function is going to be I/O limited anyway. It's simple and it's error proof. Save the optimisation for when profiler shows need.

Enigma

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