Write a program that creates a login name for a user, given the user's first name, last name, and a four-digit integer as input.

Question

1 month ago

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Write a program that creates a login name for a user, given the user's first name, last name, and a four-digit integer as input.

Output the login name, which is made up of the first five letters of the last name, followed by the first letter of the first name, and then the last two digits of the number (use the % operator). If the last name has less than five letters, then use all letters of the last name. Hint: Use the to_string() function to convert numerical data to a string.

Computers and Technology

1 answer:

Amiraneli [921] · Answer 1 · 2026-03-02T04:13:25+03:00

Answer:

In C++:

#include <iostream>

#include <string>

#include <sstream>

using namespace std;

int main(){

string lname, fname, stringnum; int num; string login, pwd;

cout<<"Last Name: "; cin>>lname;

cout<<"First Name: "; cin>>fname;

cout<<"Four-digit integer: "; cin>>num;

stringnum = to_string(num).substr(0, 4);

stringstream geek(stringnum); geek>>num;

num = num%100;

pwd = to_string(num);

if(lname.length()<5){ login = lname + fname.substr(0, 1); }

else{ login = lname.substr(0, 5) + fname.substr(0, 1); }

cout<<"Login Name: "<<login<<endl;

cout<<"Password: "<<pwd<<endl;

return 0;

}

Explanation:

This initializes all the required variables

string lname, fname, stringnum; int num; string login, pwd;

This asks the user for their last name

cout<<"Last Name: "; cin>>lname;

This asks for the first name of the user

cout<<"First Name: "; cin>>fname;

This prompts for a four-digit number

cout<<"Four-digit integer: "; cin>>num;

This converts the number into a string and extracts the first four digits

stringnum = to_string(num).substr(0, 4);

This changes the string back into an integer

stringstream geek(stringnum); geek>>num;

This extracts the last two digits of the four-digit number

num = num%100;

This generates the user's password

pwd = to_string(num);

This constructs the user's login name.

This block runs if the last name has fewer than five letters

if(lname.length()<5){ login = lname + fname.substr(0, 1); }

This block runs otherwise

else{ login = lname.substr(0, 5) + fname.substr(0, 1); }

This displays the login name

cout<<"Login Name: "<<login<<endl;

This displays the password

cout<<"Password: "<<pwd<<endl;