TIL: Quirkiness of C|C++
Digraphs! A legacy of C, inherited by C++, that, back in the day, was useful for writing some correct, although pretty obscure code due to some constraints on characters like '# { } [ ]'. Let's take a look at the following hello, world! program:
%:include<iostream>
using namespace std;
int main()
<%
cout << "hello, world!" << std::endl;
return 0;
%>
Pretty cool, right? Trigraphs also exist but they are disabled on most compilers by default. Please don't use them in production code.