Question

Write a program that reads a series of words (one word per line) from a file named data.txt. Each word in the file should have each of its characters shifted by 1 character value in the ASCII table (incremented) and then that new word with its characters shifted should be printed to a new file named result.txt. Each word from data.txt should be reprinted with its new encoding in result.txt. Your program should not have any knowledge of how many words are in data.txt or how long the words are or what those words might be. In other words, your program should work for any file composed of a list of words with one per line.

C++

Answer 1

#include <iostream>
#include<fstream>
#include <string>

using namespace std;

int main ()
{
//create object
ifstream file("data.txt");
ofstream ofile;
ofile.open("result.txt");
  
//string variable declaration
string str;
char newString[100];
  
//check if file is not opened successfully
if (!ofile)
{
cout << "Error opening data.txt" << endl;
return 1;
}
  
while (getline(file, str))
{
int i=0;
while(str[i]!='\0')
{
//increase the ASCII value by one
newString[i] = str[i]+1;
i++;
}
  
//add null character at the end of the character array
newString[i] = '\0';
  
//write back to the result file
ofile << newString<<endl;
}
  
//close the file
file.close();
ofile.close();
}

INPUT:

data.txt

Hi Hello How Are You

OUTPUT:

result.txt