FAQ: Variables - Review

This community-built FAQ covers the “Review” exercise from the lesson “Variables”.

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Learn C++

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When is the reference guide for C++ variable going to come out?

My output is, "your bmi is: 'inf"

int main() {

double height, weight, bmi;
bmi = weight / (height * height);

std::cout << "Type in your height (m): ";
std::cin >> height;
std::cout << "Type in your weight (kg): ";
std::cin >> weight;
std::cout << "Your bmi is: " << bmi << “\n”;

return 0;


When they literally say don’t forget to add a “\n” multiple times, and then they don’t