Question 1:

SQL problems are solved On PostgreSQL, it might not work on other SQLs(MySQL) and result in errors. outputs of queries are given in another file.

I've used Mingw compiler (g++/gcc).

Question 2

CPP file of question 2 is working properly with examples for "call by value" and "call by reference" given and explained.

Question 3

cpp file is not solved for error but the explanation for the question asked is written in comments.

Question 4:

The web server in c is implemented using GCC compiler On linux environment (ubuntu 22.04) will not work on windows.

Question 5:

Please refer to read.md for detailed instruction to navigate through Chromium embedded framework solution for Question 5.