Please explain in detail what will happen if the following program is executed:
#include <iostream>
int main() {
    std::cout << "Hello, world!" << std::endl;
}
| delimiter ;; | |
| drop procedure if exists build_catalog;; | |
| create procedure build_catalog(IN categories INT, IN products INT) | |
| begin | |
| SET @category_count = 1; | |
| SET @CATNAMEPREFIX = "Category "; | |
| SET @CATURLKEYPREFIX = "cat-"; | |
| SET @CATURLPATHPREFIX = "catpath-"; | |
| SET @ROOTCATEGORY = 2; | |
| SET @INCLUDEINMENU = 1; |