Question

I need a c++ code that:

1- Read from a text file using C++ example: mytext.txt

2- a function that adds three letters to each latter in that text file

for example, if there is a "hello world" inside the text file

the function will make it look like "habcezyeloiulghtoiuy wnfroewqrmnilkitduyt" if you note the first latter h follow with three letters abc the e follow with another three zye .... etc

so the function is like hashing function that adds for each latter another three letters. print the hashing in this function in main.

3- a function that gives me the solution for the first function and prints the solve for the hashing which is the info inside the text file in the main.

example: hello" h---e---l---l---o--- print h then delete the other three letters then print e then delete the other three letters ...etc at final it will look like original word inside the text file "hello".

the text file could include sentences no limit.

Answer 1

Please find the answer below:

```

#include <bits/stdc++.h>
using namespace std;

const int MAX = 26;

string addRandomString(int n)
{
char alphabet[MAX] = { 'a', 'b', 'c', 'd', 'e', 'f', 'g',
'h', 'i', 'j', 'k', 'l', 'm', 'n',  
'o', 'p', 'q', 'r', 's', 't', 'u',
'v', 'w', 'x', 'y', 'z' };
string res = "";
for (int i = 0; i < n; i++)  
res = res + alphabet[rand() % MAX];
return res;
}

string getOriginalText (string hashedText) {

string originalText = "";

for (int i=0; i<hashedText.length() && i%4 == 0; ++i)
{
originalText = originalText + hashedText.at(i);
}

return originalText;

}

int main()
{
srand(time(NULL));

string hashedText = "";

 char ch;
 fstream fin("mytext.txt", fstream::in);
 while (fin >> noskipws >> ch) {
    hashedText = hashedText + ch + addRandomString(3) ;

}

cout << "Hashed Text " << hashedText << endl;

cout << "Original Text " << getOriginalText(hashedText) << endl;

return 0;
}

```

Hope this helps!