CODE CHALLENGE: C++ FUNCTIONS.cpp

//1/7: How It Works

//2/7: Introduction
#include <iostream>

// Define introduction() here:
void introduction(std::string first_name, std::string last_name) {
  std::cout << last_name << ", " << first_name << " " << last_name;
}

int main() {
  
  introduction("Beyonce", "Knowles");
  
}

//3/7: Average
#include <iostream>

// Define average() here:
double average(double num1, double num2) {
  return (num1 + num2) / 2;
}

int main() {
  
  std::cout << average(42.0, 24.0) << "\n";
  std::cout << average(1.0, 2.0) << "\n";
  
}

//4/7: Tenth Power
#include <iostream>
#include <cmath>

// Define tenth_power() here:
int tenth_power(int num) {
  return pow(num, 10);
}

int main() {
  
  std::cout << tenth_power(0) << "\n";
  std::cout << tenth_power(1) << "\n";
  std::cout << tenth_power(2) << "\n";
  
}

//5/7: First Three Multiples
#include <iostream>
#include <vector>

// Define first_three_multiples() here:
std::vector <int> first_three_multiples(int num) {
   std::vector <int> n = {num, num*2, num*3};
   return n;
}

int main() {
  
  for (int element : first_three_multiples(8)) {
    std::cout << element << "\n";
  }
  
}

//6/7: Water Plant
#include <iostream>

// Define needs_water() here:
std::string needs_water(int days, bool is_succulent) {
  if (is_succulent == false && days > 3){
    return "Time to water the plant.";
  }
  else if (is_succulent == true && days <= 12) {
    return "Don't water the plant!";
  }
  else if (is_succulent == true && days >= 13){
    return "Go ahead and give the plant a little water.";
  }
  else {
    return "Don't water the plant!";
  }
} 

int main() {
  
  std::cout << needs_water(10, false) << "\n";
  
}

//7/7: Palindrome
#include <iostream>

// Define is_palindrome() here:
bool is_palindrome(std::string text) {
  std::string reversedtext = "";
  for (int i = text.length() - 1; i >= 0;i--) {
    reversedtext += text[i];
  } 
  if (reversedtext == text) {
    return true;
  }
    return false;
}

int main() {
  
  std::cout << is_palindrome("madam") << "\n";
  std::cout << is_palindrome("ada") << "\n";
  std::cout << is_palindrome("lovelace") << "\n";
  
}