C++ Puzzler
summary
Lightning puzzler: write a valid portable C or C++ program that prints "hello world" using no semicolons. Concrete answers: C++ solution uses #include <iostream> and streams; C solution relies on the old C rule of implicit int and calling a function without a prior declaration to get away without headers. C++ refuses because of function overloading and richer type semantics (references/overloads) so every function must be declared before use.
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