compiler construction - C++ programs, compiling with g++ -

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I have a lot of information about compiling the C ++ program with g ++ in the Linux environment but, maybe That's something I'm missing, I'm getting this strange output / behavior.

I have the source file in test.cpp. To compile it, I did 

 (1) g ++ -a test.cpp g ++ -o test test.o ./test

everything works fine But when I had complained and linked the same step, like 

 (2) g ++ test.cpp -o test ./test => works fine (3) G ++ - Test.cpp -o test => does not work

In my last case, test is generated but is no longer executable; But in my estimation it should work fine. So, what is wrong or do I need to change some settings / configurations ??

I'm using G ++ 4.3.3

Thanks.

when you say: 

  g ++ -c test .cpp -o test

-C prevents flag linking, is therefore not executable - you are renaming the .o file

Actually , Do not do this.


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