Question

This Question is from the book(Problem Solutions with C++ 10th Walter Savitch(ISBN-10 1292222824) Programming project 8 chapter 6.

m this book 8 This program numbers the lines found in a text file. Write a reads text from a file and outputs each line to the screen and to another file preceded by a line number. Print the line number at the start of the line and right-adjusted in a field of three spaces. Follow the line number with a colon, then one space, then the text of the line. You should get a character at a time and write code to ignore leading blanks on each line. You may assume that the lines are short enough Otherwise, allow default printer long (that is, wrap or truncate). program that to fit within a line on the screen. or screen output behavior if the line is too A somewhat harder version determines the number of spaces needed in the field for the line numbers by counting lines before processing the lines of the file. This version of the program should insert a new line after the last complete word that will fit within a 72-character line. Writo

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

#include<iostream>

#include<fstream>

#include<iomanip>

using namespace std;

int main(){

                //asking for input file name

                cout<<"Enter input file name: ";

                string infilename;

                //reading input file name

                getline(cin, infilename);

                //opening file in read mode

                ifstream inFile(infilename.c_str());

                //checking if file opened correctly

                if(!inFile){

                                //error, file not found / not opened

                                cout<<"Error! Input file not found"<<endl;

                                return 0; //exiting

                }

                //opening output.txt file

                ofstream outFile("output.txt");

                //starting line number from 1

                int lineNum=1;

                char c;

                bool beginning=true; //beginning of a line

                inFile>>noskipws; //allowing white spaces when reading

                //looping and reading each and every character from file

                while(inFile>>c){

                                //checking if this is the beginning

                                if(beginning){

                                               //printing line number to console and output file, with 3 spaces for line number

                                               //and right aligned

                                               cout<<setw(3)<<right<<lineNum<<": ";

                                               outFile<<setw(3)<<right<<lineNum<<": ";

                                               //checking if c is white space

                                               if(c==' ')

                                               //looping until a non white space character is found

                                               while(inFile.peek()==' '){

                                                               inFile>>c;

                                               }

                                               //setting beginning to false

                                               beginning=false;

                                               //printing c to output file and console if it is not blank space

                                               if(c!=' '){

                                                               cout<<c;

                                                               outFile<<c;

                                                               //incrementing line number and setting beginning to true if

                                                               //c is newline character

                                                               if(c=='\n'){

                                                                               lineNum++;

                                                                               beginning=true;

                                                               }

                                               }

                                }else{

                                               //in other cases, just printing the character to the console and file

                                               cout<<c;

                                               outFile<<c;

                                               //incrementing line number and setting beginning to true if

                                               //c is newline character

                                               if(c=='\n'){

                                                               lineNum++;

                                                               beginning=true;

                                               }

                                }

                               

                }

                //closing output file saving changes

                outFile.close();

                return 0;

}

/*OUTPUT*/

Enter input file name: input.txt 1: some text 2: in this file 3: some 4: more text 5: following 6: 7: some text 8: in this file 9: some 10: more text 11: following

/*input.txt (file used for running above program)*/

some text

in this file

some

more text

following

some text

   in this file

some

    more text

following

Answer 2

Thank you very much this is very helpful I am still lost with everything however Ill definitely get the hang of it by today. How can I find you to ask more questions?