Strings

Q1.

What will be the output of the following programs for the mentioned input test cases?

• I.

  #include <iostream>
  #include <string>
  
  int main()
  {
      std::cout << "Enter your full name: ";
      std::string name;
      std::cin >> name;
  
      std::cout << "Enter your favorite color: ";
      std::string color;
      std::cin >> color;
  
      std::cout << "Your name is " << name << " and your favorite color is " << color << '\n';
  
      return 0;
  }

  Input Test Cases:

  // #1
  name: Lagan
  color: black
  
  // #2
  name: Lagan Khelaiya
  color: black

• II.

  #include <iostream>
  #include <string>
  
  int main()
  {
      std::cout << "Enter a number: ";
      int number;
      std::cin >> number;
  
      std::cout << "Now enter your name: ";
      std::string name;
      std::getline(std::cin, name);
  
      std::cout << "Hello, " << name << ", you entered " << number << ".\n";
  
      return 0;
  }

  Input Test Cases:

  // #1
  number: 98
  name: Magan
  
  // #2
  number: 98
  name: Magan Chhapri

• III.

  #include <iostream>
  #include <string>
  
  int main()
  {
      std::cout << "Enter your full name: ";
      std::string name;
      std::getline(std::cin >> std::ws, name);
  
      std::cout << "Enter your favorite color: ";
      std::string color;
      std::getline(std::cin >> std::ws, color);
  
      std::cout << "Your name is " << name << " and your favorite color is " << color << '\n';
  
      return 0;
  }

  Input Test Cases:

  // #1
  name: Lagan
  color: black
  
  // #2
  name: Lagan Khelaiya
  color: black

Q2.

Write a program that asks the user to enter their full name and their age. As output, tell the user the sum of their age and the number of characters in their name.

Expected Output:

Enter your full name: Magan Chhapri
Enter your age: 32

Magan Chhapri's age + length of name is: 45

Q3.

Write a program that asks for the full name and age of two people, then prints which person is older.

Enter the name of person 1: Gagan Rangeela
Enter the age of Gagan Rangeela: 37

Enter the name of person 2: Chhagan Sureela
Enter the age of Chhagan Sureela: 44

Chhagan Sureela (age 44) is older than Gagan Rangeela (age 37).