Question

The input file is already there. the file is too long, don't have to send it.

using virtualbox ubuntu

We want to create a command line terminal where user can run the snap commands with three different options: -thanos, -ironman and -holk. The terminal must keep listening to user command.

If the user type:

•  snap -thanos: all the text line in the text file “input.txt” that does not contain the word “thanos” must be randomly removed. The remaining text will be save into the new file named “thanossnap.txt”. The content in “input.txt” keep unchanged

•  snap -holk: all the text line in the text file “thanossnap.txt” that does not contain the word “thanos” will be duplicated. The new content will be save into the new file named “holksnap.txt”

•  snap -ironman: all the text line in the text file “input.txt” that contains the word “thanos” must be removed. The remaining contents must be saved in file “ironmansnap.txt”

•  exit: quit the programme

Something that might be used below

sprum@tevada:/Documents/Implementation/Teaching/SF/files ./q3 Enter your commande snap thanos Enter your commande snap -ironman Enter your commande snap -holk Enter your commande: exit sprum@tevada~/Documents/Implementation/Teaching/SF/files Write contents into a text file 1#include 2#include 3 using namespace std 5 int mainO 6 ofstream myfile; 7 myfile.open ("example.txt", ios::app); 8 myfile

Answer 1

Programming language:c++

The file names are given as per the question.Please maintain the proper file name and input content of the input.txt file.

source code:

#include<iostream>
#include<fstream>
#include<string>
using namespace std;
int main()
{
string input;
ifstream file1;
while (1)
{
cout << "Enter your commande : ";
cin >> input >>endl;
switch(input)
{
case "snap -ironman":
{
ofstream file2;
string line;   
file1.open("input.txt");
string str="thanos";
file2.open("ironmansnap.txt");
while (getline(file1, line))
{
if (line.find(str) != std::string::npos) //the reading line does not contain the word thanos.
{
file2<< line<<"\n";
}
  
}
break;   
  
}
case "snap -thanos":
{
string line;
ofstream file2;
file1.open("input.txt");
string str="thanos";
file2.open("thanossnap.txt");
while(getline(file1, line))
{
if (line.find(str) == std::string::npos)//reading the line that contains the word thanos.
{
file2<< line<<"\n";
}
}
break;

}
case "snap -holk":
{
string line;
ofstream file2;
file1.open("thanossnap.txt");
file2.open("holksnap.txt");
while(getline(file1, line))
{
file2<< line<<"\n";//duplicating the content of thanossnamp.txt into holksnap.txt.
}
break;

}
case "exit":
exit(0);
default:
cout<<"Enter the valid commande":

}

}

return 0;
}

//Hope i answered for this question.