Question

Use C++ language.

Write a program that gives and takes advice on program writing. The program starts by writing a piece of advice to the screen and asking the user to type in a different piece of advice. The program then ends. The next person to run the program receives the advice given by the person who last ran the program. The advice is kept in a file, and the contents of the file change after each run of the program. You can use your editor to enter the initial piece of advice in the file so that the first person who runs the program receives some advice. Allow the user to type in advice of any length so that it can be any number of lines long. The user is told to end his or her advice by pressing the Return key two times. Your program can then test to see that it has reached the end of the input by checking to see when it reads two consecutive occurrences of the character '\n'. Name the input file as “advice.txt”.

Answer 1

#include <iostream>
#include <fstream>
using namespace std;
int main()
{
//this is block is to read existing advice from given file
string line;
//taking file name
ifstream myfile ("advice.txt");
//reading content and displaying to console
if (myfile.is_open())
{
   cout<<"Advice From File\n----------------\n";
while ( getline (myfile,line) )
{
cout << line << '\n';
}
myfile.close();
}

else cout << "Unable to open file";


//this block is to write the new advice to the file by replacing old advice
fstream file;
file.open("advice.txt",ios::out);
//taking advice from user
cout<<"\n\nEnter new Advice\n----------------\n";
string s;
getline(cin, s);
//replacing into the file
file<<s;
file.close();
cout<<"\n\nYour Advice has written succesfully to the file\n";
return 0;
}

//RUN1

//RUN2

//RUN3