What is static block in c or c++? [duplicate]

Answer 1

While indeed, C++ does not have static blocks as part of the language, you can implement static blocks without you (as a user) having to use any classes or namespaces, and can write:

#include "static_block.h" 

static_block {
     int x = 1;
     int y = 2;
     int z = x+y;
     std::cout << z << " = " << x " << " + " << y << "\n";
}

or whatever else you want. You can't have those within classes, though, just at file scope. See a detailed description of these in my answer to a related question, and the code for static_block.h here.

Note: This does not require C++11 and will work well with old compilers.