Warning c4307: '+': Integral Constant overflow or warning c4307: "+": integer constant Overflow

Give me a warning when getting the file size:

Warning c4307: '+': Integral Constant Overflow

Or

Warning c4307: "+": integer constant Overflow

 

The problem lies in this sentence:

DWORD dwfilesize = (finddata. nfilesizehigh * (maxdword + 1) + finddata. nfilesizelow;

 

Apparently the problem lies in (maxdword + 1)

 

The solution is also simple. Assign maxdword to a dwordlong before performing the operation.

 

 

// Correct file size method <br/> dwordlong dwhighbase = maxdword; <br/> dwhighbase + = 1; <br/> dwordlong fiesize = (findfiledata. nfilesizehigh * dwhighbase) + findfiledata. nfilesizelow; <br/>