Merge branch 'master' of ssh://c4science.ch/source/sp4e

lectures/code_snippets/hello.cpp

+#include <iostream>
+int main(int argc, char *argv[]) {
+
+  /* This is a comment */
+
+  // Print "Hello World" to the screen
+  std::cout << "Hello World\n";
+  return 0;
+}
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