I have often encountered following floating errors like
that:
sqrt(2):ambiguious call ?

so I have to replace it with sqrt(double(2)) or sqrt(2.0)

but actually, many other compilers treat it alright,

I have also -T-I-R-E-D- gettings those f**king 'compilation
errors', especially at online contests when they lead to
the bunch of the penalty time!!!

Here's my list of comp. errors.
Here I omitted the repeated ones (e.g. I got ambiguity for
sqrt() three or four times, the same goes to the 'undefined
identifier' error)
ALL OF THEM COMPILED OK on both my home and university
Microsoft VC++ 6.0 (w/ and w/o SP3)

temp\18560(20) : error C2668: 'sqrt' : ambiguous call to
overloaded function
17751.obj : error LNK2001: unresolved external symbol
_strdup
temp\17391(3) : error C2169: 'abs' : intrinsic function,
cannot be defined
temp\16940(37) : error C2065: 'i' : undeclared identifier
[there was the fragment like this: for(int i=0;i<N;i++)
{/* ... */} i=0 /* C2065 */ ]
temp\12991(131) : error C2440: 'argument' : cannot convert
from 'const class Matrix' to 'class Matrix &' [ there were
*NO* const-modifier conversions ]
temp\6431(41) : error C2668: 'acos' : ambiguous call to
overloaded function
temp\5511(8) : fatal error C1083: Cannot open include
file: 'malloc.h': No such file or directory [WTF??? that's
an ANSI standart header file!!]
temp\5416(88) : fatal error C1004: unexpected end of file
found
e:\judge\include\memory(9) : fatal error C1083: Cannot open
include file: 'xmemory': No such file or directory
e:\judge\include\streambuf(9) : fatal error C1083: Cannot
open include file: 'xlocnum': No such file or directory

what's the damn old C++ compiler do you use?? I wonder
that's MSVC4.2 or even older..
It even doesn't support STL (standrat template library),
and we have to rewrite lists,
queues, trees, Balanced-trees and other unpretty to code
stuff again and again.

P.S.
Nevertheless I want to thank you that you didn't choose
DOS16 platform and BorlandC 3.1 and BorlandPascal 7.0 as
compilers, as they did it on ACM Northeastern Quarter &
Half. That would be MUCH worse to think of 64Kb barrier, of
16bit integer's and other damn things :)

the VC compiler is too slow to compile a file, and
difficult to handle all the projects and workspaces,so I
prefer BC 3.1, it's sooooooooo fast, but I have to use
16bit integers, and 64k memory to debug at most,
another alternative comiler is Djgpp(gcc under dos), it's
powerful, but compile not as fast as bc 3.1

> the VC compiler is too slow to compile a file, and
> difficult to handle all the projects and workspaces,so I
> prefer BC 3.1, it's sooooooooo fast, but I have to use
> 16bit integers, and 64k memory to debug at most,
> another alternative comiler is Djgpp(gcc under dos), it's
> powerful, but compile not as fast as bc 3.1

IDE is too good, and I can't live without it, I don't want
to recite all the compiler options, and using an editor to
edit my program, then quit, then compile, then debug, then
maybe change code again, it's too terrible.
btw /mt means multi thread?