Tell me why we are including "using namespace std" statement in our code. And if we use the code while specifying ".h" in iostream include statement getting error like
--------------------Configuration: fibonaci - Win32 Debug--------------------
Compiling...
fibonaci.cpp
e:\giri\c++\ex\fibonaci\fibonaci.cpp(2) : error C2871: 'std' : does not exist or is not a namespace
Error executing cl.exe.
fibonaci.obj - 1 error(s), 0 warning(s)
what is the reason?? Can you explain me??