Outputting from a .exe to cmd

Question

I am writing a little program in c++ which creates an .exe which i then run by calling it with parameters in cmd. I want to be able to display output from the .exe into the cmd that I ran it from. I currently have this code which opens a new cmd window to display output which is close but not what i want. any help with this would be great! thanks.

AllocConsole();
DWORD NumberOfBytesWritten = 0;
WriteFile( GetStdHandle(STD_OUTPUT_HANDLE), strLog1, lstrlen(strLog1), &NumberOfBytesWritten, 0);

Update: I have also been able to write to a text file using dir > log.txt in the command window when calling the program, is there a way I can change this so that it directs outputs to the console window? Thanks,

Answer 1

My psychic debugging powers tell me that your build tools are configured to create your application in GUI rather than console mode.

If you reconfigure the build so that it generates a console mode application, you won't need to call AllocConsole or do anything special; you'll automatically be assigned to the console of the parent process.

Answer 2

Did you try simple operations, such as:

std::cout << "Print me" ;

or

std::cerr << "Print me too";

?

(I hope I understood correctly that you want to print to the same console where you started your app)

Answer 3

That question has already been asked: How to output to the console in C++/Windows. Here is an answer that seems to be useful in your case: https://stackoverflow.com/a/587792/1728537