View Compilation Error

0_0_14573392_9503.cpp: In function 'int main()':
0_0_14573392_9503.cpp:112:18: error: no matching function for call to 'hdu5396::solve()'
     solver.solve();
                  ^
0_0_14573392_9503.cpp:112:18: note: candidate is:
0_0_14573392_9503.cpp:67:10: note: void hdu5396::solve(std::istream&, std::ostream&)
     void solve(std::istream &in, std::ostream &out) {
          ^
0_0_14573392_9503.cpp:67:10: note:   candidate expects 2 arguments, 0 provided