View Compilation Error

0_0_28226667_12152.cpp: In function 'int main()':
0_0_28226667_12152.cpp:33:18: error: too few arguments to function 'char* gets_s(char*, rsize_t)'
   while (gets_s(c)) {
                  ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/stdio.h:959:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/cstdio:42,
                 from 0_0_28226667_12152.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/sec_api/stdio_s.h:91:25: note: declared here
   _CRTIMP char* __cdecl gets_s(char*,rsize_t);
                         ^
0_0_28226667_12152.cpp: In function 'int badness(int, int, int)':
0_0_28226667_12152.cpp:86:44: error: 'pow' was not declared in this scope
  return temp + (int)pow(spaceLeft - temp, 2);
                                            ^