Lesson 2: Functions

Activity 3: Calculating if a Person is Eligible to Vote or Not

1. Include the header file in the program to print the output as shown here:

   #include <iostream>

2. Now, create a function named byreference_age_in_5_years and the if loop with the following condition to print the message:

   void byreference_age_in_5_years(int& age) {
     if (age >= 18) {
       std::cout << “Congratulations! You are eligible to vote for your nation.” << std::endl;
       return;

3. Add the else block to provide another condition if the age of the user is less than 18 years:

     } else{
       int reqAge = 18;
       int yearsToGo = reqAge-age;
       std::cout << “No worries, just “<< yearsToGo << “ more years to go.” << std::endl;
     }
   }

4. In the main function, create a variable of type integer and pass it as a reference in the byreference_age_in_5_years function as shown:

   int main() {
       int age;
       std::cout << “Please enter your age:”;
       std::cin >> age;
       byreference_age_in_5_years...