Add: Play file 2--add line numbers to all lines in a text file and write to a new file

Enter the code:

/**copyright (c) 2015, College of Computer and Control engineering, Yantai University *all rights reserved.* file name: sum123.cpp*    Creator: Lin Haiyun * Completion Date: August 18, 2015 * version number: v2.0* Problem Description: Add line numbers to all lines in the text file Abc.txt and write to the Newabc.txt file. * Program input: File read. * Program output: Add line numbers to all lines in the text file and write to the new file. */#include <iostream> #include <cstdlib> #include <fstream>using namespace Std;int main () {    FStream Outfile,infile;    Infile.open ("Abc.txt", ios::in); (1)    if (!infile) {        cout<< "Can ' t open the file." <<endl;        Abort ();    }    Outfile.open ("Newabc.txt", ios::out);//(2)    if (!outfile) {        cout<< "Can ' t open the file." <<endl;        Abort ();    }    Char buf[800];    int i=1;    while (!infile.eof ())//(3)    {        infile.getline (buf,800);//(4)        outfile<<i++<< ":" << buf<<endl; (5)    }    infile.close ();    Outfile.close ();    return 0;}

Operation Result:

Abc.tex File Data

Newabc.tex

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Add: Play file 2--add line numbers to all lines in a text file and write to a new file