Answer to Question #319675 in C++ for Rille

Question

#include <iostream>

#include <string>

using namespace std;

int main() {

string last, first, middle;

int age;

string birthday;

string gender;

string address;

cout << "Enter you lastname: ";

cin >> last;

cout << "Enter you firstname: ";

cin >> first;

cout << "Enter you middlename: ";

cin >> middle;

cout << "Enter your birthday: ";

cin >> ws;

getline(cin, birthday);

cout << "Enter your age: ";

cin >> age;

cout << "Enter your gender: ";

cin >> gender;

cout << "Enter your permanent address: ";

cin >> ws;

getline(cin, address);

cout << "Hello " << first << " " << middle << " " << last << endl;

cout << "Your birthday is " << birthday

<< " and now you are " << age << " years old." << endl;

cout << "You are " << gender << endl;

cout << "and you live at " << address << endl;

return 0;

With explanation

Answer 1

#include <iostream> // library to work with console input/output.

#include <string> // library to work with strings.

// Here we say to the programm we use the SDT namespace.

// That means we don't need to write it before std methods.

// e.g: std::cin >> ... || std::cout << ...

using namespace std;

// Main function. From here our program starts working.

int main() {

   string last, first, middle; // Declare string variables.

   int age; // Declare an integer variable.

   string birthday; // Declare a string variable.

   string gender; // Declare a string variable.

   string address; // Declare a string variable.

   // Here we ask the user's input.

   // "cout" writes a text to the console, but "cin" accepts the user's input.

   cout << "Enter you lastname: ";

   cin >> last; // save the user's input into the string variable.

   cout << "Enter you firstname: ";

   cin >> first; // again...

   cout << "Enter you middlename: ";

   cin >> middle; // again...

   cout << "Enter your birthday: ";

   cin >> ws; // and again.

   //The "ws" variable is not declared before and it's never used later. Maybe it should be removed?"

   // Don't be scared, this function does the same: accepts user's input.

   // There are 2 arguments:

   // cin - the stream from where to get data;

   // birthday - string variable where to save incomming data.

   getline(cin, birthday);

   cout << "Enter your age: ";

   cin >> age; // save the user's input into the integer variable.

   // If you enter here non-integer variable, you'll receive an error.

   cout << "Enter your gender: ";

   cin >> gender;

   cout << "Enter your permanent address: ";

   cin >> ws;

   //The "ws" variable is not declared before and it's never used later. Maybe it should be removed?"

   getline(cin, address); // save user's input into address string variable.

   // The main output of the program starts here.

   // "cout" can write to the console not only text, but numbers and value of variables as well.

   // You can use special format syntax to combine text, numbers and variables.

   // This syntax is represented below.

   cout << "Hello " << first << " " << middle << " " << last << endl;

   cout << "Your birthday is " << birthday

       << " and now you are " << age << " years old." << endl;

   cout << "You are " << gender << endl;

   cout << "and you live at " << address << endl;

   // The end of program.

   // As main function returns integer, so we returning here 0.

   // It's common code for successfully finished program.

   return 0;

}