In what cases we need to include ?

Question

In what cases should we include cassert?

Answer 1

See an easily accessible reference

#include 
// uncomment to disable assert()
// #define NDEBUG
#include 

int main()
{
    assert(2+2==4);
    std::cout << "Execution continues past the first assert\n";
    assert(2+2==5);
    std::cout << "Execution continues past the second assert\n";
}