Windows Command Prompt Input Explaination

Question

Could you help me understand this input into the command line :

type direct-mapped.input | mem_sim 8 2 2 1 2 1 2 2

direct-mapped.input is a file with info that is read in a cpp file. mem_sim is the cpp file that has been compiled and the numbers following mem_sim are inputs into the cpp file.

Also how are these values stored in the cpp file?

Thanks in advance

Answer 1

In *nix and Windows operating systems, the numbers are not stored in the CPP file; nothing will modify the source file.

The operating system stores the numbers in an argument list that is passed to the main function in your program (aka the 2nd parameter to main ).

ArgC  |  ArgV
--------------
0     |  mem_sim
1     |  8
2     |  2
3     |  2
4     |  1
5     |  2
6     |  2