Discussion: Going Global
Execute the code to understand the output and gain insights into global variables.
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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 id;int main(){std::cout << id;}
Understanding the output
This puzzle looks similar to the Hack the Planet! puzzle; they both use the value of an uninitialized variable id
. However, this is not an undefined behavior, and the program prints 0
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