Question

In C++

write a complete and correct x++ program that generates student email addresses and prints them to the screen based upon the data found in an input file, called students . txt. Each line of the space, followed by the student’s last name. Every email address is to be of the form [email protected]. In general, each username has four parts in this order: (i) the student; last name in lowercase letters; (ii) a number between 10- 99 generated at random for each student; (iii) the first character (in lowercase) in the student’s first name; and (iv) the letter x repeated until the username is of length 10. If any username defined above is longer than 10 characters in length, then only use the first 10 characters. For example, if the first seven lines of students. Txt were as shown below in the first column, then generated email addresses would be as shown be as shown below in the second column:

Hayden Christensen [email protected]

Donald Sutherland [email protected]

Kate Blanchett [email protected]

Neve Campbll [email protected]

Wayne Gretzky [email protected]

Justin Bieber [email protected]

Steve Jobs [email protected]

…

Hints:

(i) The header file includes useful function like tolower () and isspace (). Each of which takes a char as input.

(ii) You may use some string function discussed in class: at () , find () , length () , size () , and substr ().

(iii) Be carful with data types.

(iv) The header file includes a value returning function rand () that can be used to generate random integer numbers in the range [ 0 , RANd_MAX] where RAND_MAX is a very large integer , 32,767, for instance. To use this function, you should:

* Include in the header;

* Call the void faction srand (time(NULL)) at the beginning of you main () function to initialize the random generator; and

* Call rand () wherever you want a random integer number.

Please read the question before answering it and show the output Thanks

Answer 1

Here is the code for you:

#include <iostream>
#include <fstream>
using namespace std;
string tolower(string input)
{
string output = "";
for(int i = 0; i < input.length(); i++)
output += tolower(input[i]);
return output;
}
string appendOrTrim(string input)
{
string output = "";
for(int i = 0; i < 10 && i < input.length(); i++)
output += input.at(i);
for(int i = output.length()-1; i < 9; i++)
output += 'x';
return output;
}
int main()
{
ifstream fin;
string fileName;
//StudentNames.txt
cout<<"Enter the name of the file to read student names: ";
cin>>fileName;
fin.open(fileName);
srand(time(NULL));
string firstName, lastName, mailId, finalId;
while(!fin.eof())
{
fin>>firstName;
fin>>lastName;
mailId = tolower(lastName);
mailId += to_string(rand() % 90 + 10);
mailId += tolower(firstName.at(0));
finalId = appendOrTrim(mailId) + "@university.ca";
cout<<finalId<<endl;
}
}

And the output screenshot is: