sys.argv is the list of command-line arguments passed to the Python program. argv contains all the items that come along via the command-line input, it's basically an array holding the command-line arguments of the program.
To use syss.argv, we will first have to import sys. The first argument, sys.argv [0], is always the name of the program as it was invoked and sys.argv [1] is the first argument we pass to the program.
Example:
main (sys.argv [1]) - Accepts the program file and the input file as a list. argv[0] contains the python program which is need not to be passed because by default _main_contains source code reference and argv[1] contains the name of the C++ file which is to be processed.

welcome → module name
      ●      →  operator name
display() → definition name

(i) MinGW refers to a set of runtime header files, used in compiling and linking the code of C, C++ and FORTRAN to be run on Windows Operating System.
(ii) MinGw- W64 (version of MinGW) is the best compiler for C++ on Windows. To compile and execute the C++ program, need 'g++' for Windows. MinGW allows to compile and execute C++ program dynamically through Python program using g++.
(iii) Python program that contains the c++ coding can be executed only through 'MinGW_w64 project' run terminal. The run terminal open the command -line window through which Python program should be executed.
(iv) g++ is a program that calls GCC (GNU C compiler) and automatically links the required C++ Library files to the object code.

(i) To automate certain tasks in a program
(ii) Extracting information from a data set
(iii) Less code intensive as compared to traditional programming language
(iv) can bring new functions to applications and glue complex systems together
(v) Conjuction with other programming languages HTML, Java, C++.