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How do I read data from a file if my file is like this with comma separated values 1, 2, 3, 4, 5\n 6, 7, 8, 9, 10\n \n and after reading the file, I want to write the data back into other file as same format above. I can get total number of lines, using string line; while(!file.eof()){ getline(file,line); numlines++; } numline--; // remove the last empty line but how can I know total number of digits in a row/line ?? I also have vector of ints to store the data. So, I want to read the first line and then count total number of elements in that line, here 5 (1,2,3,4,5) and store them in array/vector, and read next line and store them in vector again and so on till I reach EOF. Then, I want to write the data to file, again, I guess this will do the job of writing data to file, numOfCols=1; for(int i = 0; i < vector.size(); i++) { file << vector.at(i); if((numOfCols<5) file << ",";//print comma (,) if((i+1)%5==0) { file << endl;//print newline after 5th value numOfCols=1;//start from column 1 again, for the next line } numOfCols++; } file << endl;// last new line So, my main problem is how to read the data from file with comma separated values ?? Thanks

Tags (comma-separated) Cancel