Discussion: Weakly Typed, Strongly Puzzling
Execute the code to understand the output and gain insights into implicit type conversions and their effects.
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Run the code
Now, it’s time to execute the code and observe the output.
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#include <iostream>int main(){std::cout << +!!"";}
Understanding the output
Wait, what? Is this legal C++? What does it even mean, and why does it print 1?
While C++ is a statically typed language, it’s not particularly strongly typed. As we’ve seen throughout the course, C++ is, in fact, very eager to implicitly convert between types without explicitly telling it to. For instance, in the Aristotle’s Sum of Parts puzzle, we saw how the sum of two char types is not a char; in the A Strong Point puzzle, we saw how we should declare our constructors explicit to avoid them taking part in implicit conversions; and in the ...