c++ - More than one construction matches argument list -

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i tried compile vs2010

long long min = std::numeric_limits<int>::min(); unsigned long long max = std::numeric_limits<int>::max();   std::bitset<64> minimal(min);//here i'm getting error   cout << "minimal: " << minimal;   
error:   error c2668: 'std::bitset<_bits>::bitset' : ambiguous call overloaded function   1>            1>          [   1>              _bits=64   1>          ]   1>          c:\program files\microsoft visual studio 10.0\vc\include\bitset(136):   'std::bitset<_bits>::bitset(_ulonglong)'   1>            1>          [   1>              _bits=64   1>          ]   1>          c:\program files\microsoft visual studio 10.0\vc\include\bitset(127):   or       'std::bitset<_bits>::bitset(int)'  1>            1>          [   1>              _bits=64   1>          ]     1>          while trying match argument list '(__int64)'

why? argument of long long type , constructor should used type. don't understand what's going on.

i don't see long long 1 of options you're given in list. see:

  • _ulonglong
  • int
  • _int64

why don't cast min unsigned long long , see if fixes it. or better yet, use unsigned type - ever have bitset negative number of elements? :-)


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