FAQ: Code Challenge: C++ Functions - Water Plant

This community-built FAQ covers the “Water Plant” exercise from the lesson “Code Challenge: C++ Functions”.

Paths and Courses
This exercise can be found in the following Codecademy content:

Learn C++

FAQs on the exercise Water Plant

There are currently no frequently asked questions associated with this exercise – that’s where you come in! You can contribute to this section by offering your own questions, answers, or clarifications on this exercise. Ask or answer a question by clicking reply (reply) below.

If you’ve had an “aha” moment about the concepts, formatting, syntax, or anything else with this exercise, consider sharing those insights! Teaching others and answering their questions is one of the best ways to learn and stay sharp.

Join the Discussion. Help a fellow learner on their journey.

Ask or answer a question about this exercise by clicking reply (reply) below!
You can also find further discussion and get answers to your questions over in #get-help.

Agree with a comment or answer? Like (like) to up-vote the contribution!

Need broader help or resources? Head to #get-help and #community:tips-and-resources. If you are wanting feedback or inspiration for a project, check out #project.

Looking for motivation to keep learning? Join our wider discussions in #community

Learn more about how to use this guide.

Found a bug? Report it online, or post in #community:Codecademy-Bug-Reporting

Have a question about your account or billing? Reach out to our customer support team!

None of the above? Find out where to ask other questions here!

My solution:

#include

// Define needs_water() here:
std::string needs_water(int days, bool is_succulent)
{
std::string watering;

if (days > 3 && is_succulent == false)
{
watering = “Time to water the plant.”;
}
else if (days <= 12 && is_succulent == true)
{
watering = “Don’t water the plant!”;
}
else if (days >= 13 && is_succulent == true)
{
watering = “Go ahead and give the plant a little water.”;
}
else
{
watering = “Don’t water the plant!”;
}

return watering;
}

int main()
{
std::cout << needs_water(1, true) << “\n”;
}

Maybe someone knows a better solution?

It does’t matter if I put the int value first and then the bool and viceversa right? I think codecademy needs my code to match theirs in order for me to continue. I was doing the bool first then the int and It was giving me an error. Of course I made the that the passed parameters were in the same order as in the fuction itself.

1 Like

This still worked :slight_smile:

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 "Dont water the plant!";
  } else if (is_succulent == true && days >= 13) {
    return "Go ahead and give the plant a little water.";
  } else {
    return "Dont water the plant!";
  }
}

int main() {
  
  std::cout << needs_water(10, false) << "\n";
  
}
std::string needs_water(int days, bool is_succulent) {
  
  if (is_succulent == false && days > 3) {
    return "Time to water the plant.";
  } else if (days <= 12) {
    return "Don't water the plant!";
  } else if (days >= 13) {
    return "Go ahead and give the plant a little water.";
  } else { 
    return "Don't water the plant!";
  }
 
}

Because of the nature of the cases, you don’t need to include the boolean values for the last 3 cases. There is only one condition with the false bool, so as long as it’s first everything is okay.

1 Like

Hey guys, just wanted to offer a tip:
“is_succulent == true” is the same a “is_succulent” and “is_succulent == false” is the same as “!is_succulent”

3 Likes

That is what I did:

std::string needs_water(int days, bool is_succulent){

if (is_succulent == false && days > 3){

return "Time to water the plant.";}

if (is_succulent == true && days >= 13){

return "Go ahead and give the plant a little water.";}

return “Don’t water the plant!”;

}

This is getting to be bs.
#include
#include
using namespace std;
// Define needs_water() here:
string needs_water(int days, bool is_succulent){
if(is_succulent == false && days > 3){
return “Time to water the plant!”;
}
if(is_succulent == true && days <= 12){
return “Don’t water the plant!”;
}
if(is_succulent == true && days >= 13){
return “Go ahead and give the plant a little water.”;
}
return “Don’t water the plant!”;
}

int main() {

std::cout << needs_water(15, true) << “\n”;

}

this somehow doesn’t work for codecademy, even though it works perfectly.

An automatic grading system will be pretty particular about the test cases. The strings you are returning must EXACTLY match the strings specified in the instructions down to even the punctuation. For the first if statement, the issue is:
Your return string: "Time to water the plant!"
Expected return string: "Time to water the plant."

1 Like

Hi, can anyone explain to me why std::string take boolen?

A function has the form:

return_type function_name(any parameters go here) {
    // function body goes here
}

The return_type of the function doesn’t have to match the parameter types(s).

In this particular challenge, the first parameter is days so it makes sense for this parameter to have int type. The is_succulent parameter is of the true/false nature, so bool makes sense for this parameter. The return type can be of any type. If the function returns nothing, then return type will be void. If it returns a string, then return type will be std::string. If it returns a boolean, then return type will be bool. For this particular function, we are asked to return a string. So, the return type will be std::string.