Problem 1- Text Editor using files and strings using C++ In this proje.docx
- 1. Problem 1. Text Editor using files and strings using C++ In this project, you should write a simple line editor. Keep the entire text on a file, one line in a key Enter. Start the program with entering EDIT file, after which a prompt appears along with the line number. If the letter I is entered with a number n following it, then insert the text to be followed before line n. If I is not followed by a number, then insert the text before the current line. If D is entered with two numbers n and m, one n, or no number following it, then delete lines n through m, line n, or the current line. Do the same with the command L, which stands for listing lines. If A is entered, then append the text to the existing lines. Entry E signifies exit and saving the text in a file. Here is an Example: EDIT testfile 1>The first line 2> 3> And another line 4>I3 3> The second line 4> One more line 5> L 1>The first line 2> 3> The second line 4> One more line 5> And another line // This is now line 5, not 3; 5> D2 // line 5, since L was issued from line 5; 4> L //line 4, since one line was deleted; The first line 2> The second line // this and the following lines 3> One more line // now have new numbers 4> And another line 4> E Solution I did for Insert and exit only #include <iostream> #include <fstream> #include <stdlib.h> #include <string.h> #include <limits> using namespace std; std::fstream& GotoLine(fstream& file, unsigned int num){ file.seekg(ios::beg); for(int i=0; i < num - 1; ++i){ file.ignore(numeric_limits<streamsize>::max(),' '); } return file; } int main()
- 2. { char command; char character; string dataLine; int line=0,lineNumber=0; ifstream dataFile; dataFile.open("myFile.txt"); cout << "File Data is : "; while(getline(dataFile,dataLine)){ cout << dataLine << " " ; lineNumber++; } cout << " Enter File operation :"; cin >> command; cin >> line; switch(command) { case 'I': if(line <= 0) { } else{ fstream file("myFile.txt"); ofstream newFile; newFile.open("myFile.txt", std::ios_base::app); GotoLine(file,line); newFile << " other line after " << line; } break; case 'D': if(line <= 0) { } else{ } break; case 'A':
- 3. if(line <= 0) { } else{ } break; case 'L': if(line <= 0) { } else{ } break; case 'E': cout << "thank YOU: "; exit(0); } return 0; }