Question

I need to write a C++ program using DEV C++ that reads and prints a joke and its punch line from two different files. The first file contains a joke, but not its punchline. The second file has the punch line as its last line, preceded by “ garbage.” The main function of the program should open the two files and then call twofunctions, passing each one the file it needs. The first function should read and display each line in the file it is passed (the joke file). The second functionshould display only the last line of the file it is passed (the punch line file). It should find this line by seeking to the end of the file and then backing up to thebeginning of the last line. Data to test program can be found in the joke.txt and punchline.txt files.


+++++++++++++++++ joke.txt++++++++++++++++++++++++++++++++++++++=
Two men who work together in a facory were talking.
"I know how to get some time off," said one.
"How are you going to do that?" asked the other.
"Watch," he said, and climbed a ladder to the ceiling.
The foreman asked what he was doing up there,
and the man replied. "I'm a lightbulb."
"I think you need some time off," the foreman
said, and the first man walked out of the
factory. After a moment, the second man followed
him. "Where do you think you're going?"
the foreman shouted.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

*********************************************punchline.txt***************************************
asfasdfasdfasdfsdf
asdfasdfsadfsadfsadf
asdfsadfsdfsdf
"I can't work in the dark," he said.

*****************************************************************************************

Answer 1

#include <iostream>
#include <fstream>
#include <string>
using namespace std;

void readJoke()
{
string line;
ifstream joke ("joke.txt");
if (joke.is_open())
{
while (joke.good())
{
getline (joke,line);
cout << line << endl;
}
joke.close();
}
}

void punchline()
{
string lastline,line;
ifstream punch ("punchline.txt");
if (punch.is_open())
{
while (punch.good()){
lastline=line;
getline (punch,line);}

cout << lastline << endl;
punch.close();
}
}


int main ()
{
readJoke();
punchline();

return 0;
}

Answer 2

Dear,


/**
*This program takes two files jokes.txt and punch.txt and uses two funtions
*and read the jokes.txt and prints and read punch.txt to end of the file
*and trace back and display only the last line
*/
//Header files
#include<iostream>
#include<fstream>
using namespace std;
//funtion Protypes
void jokeFile(fstream &);
void punchFile(fstream &);
//Main funtion starts
int main()
{
//create a two file streams
fstream fin1,fin2;
//open jokes.txt in read mode
fin1.open("jokes.txt",ios::in);
if(!fin1)
{
cout<<"File not found "<
system("pause");
exit(1);
}
while(!fin1.eof())
{
//Passing the file stream to funtion
jokeFile(fin1);
}
//close the file
fin1.close();
fin2.open("punch.txt",ios::in);
while(!fin2.eof())
{
//Passing the file stream to funtion
punchFile(fin2);
}
//close the file
fin2.close();
//To pause the output
system("pause");
return 0;
}
//End of main
//jokeFile futnion definition with file stream address
void jokeFile(fstream &file)
{
cout<<"Joke File Data"<
cout<<"-------------------------------------------------"<<
while(!file.eof())
{
char line[20];
file.getline(line,21,'n');
cout<<
}
}
//punchFile futnion definition with file stream address
void punchFile(fstream &file)
{
//Variable declaration
int i=3;
char ch;
char line[30];
//Move to end
file.seekg(0L,ios::end);
//back 3 positions left
file.seekg(-3L,ios::end);
//Get character
ch=file.get();
cout<<"Punch File Data"<
cout<<"---------Last Line of Punch File ----------"<<

//Until until new line arrived
while(ch!='n')
{
file.seekg(-i,ios::end);
ch=file.get();
i++;
}
file.getline(line,i);
cout<<<
}

---

input files

jokes.txt file

punch.txt file

---

output

Note:I have taken my own joke file and punch files.

Hope this would helpful to you..