Compilation errors in MSVC - c++

Question

I'm usually a g++ user. And I loved it for it's simplicity, but I'm trying to test compiling a native executable because usually I create a static which is really heavy in size. But I'm having some errors.
One on this line : return in.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
warning C4003: not enough arguments for function-like macro invocation 'max'
file.cpp(95): error C2589: '(': illegal token on right side of '::'
file.cpp(95): error C2144: syntax error: 'unknown-type' should be preceded by ')'
file.cpp(95): error C2144: syntax error: 'unknown-type' should be preceded by ';'
file.cpp(95): error C2059: syntax error: ')'
and here
DWORD mxpath = MAX_PATH;
char ld[mxpath];
error C2131: expression did not evaluate to a constant
sas.cpp(76): note: failure was caused by a read of a variable outside its lifetime
sas.cpp(76): note: see usage of 'mxpath'
I don't understand what I'm doing wrong as this code works with g++ without any errors. I'm new to msvc and I wanted to see if it is better than compiling a g++ static.
Why are those errors coming?