View Compilation Error

0_0_24089755_18511.cpp: In function 'void dfs(int)':
0_0_24089755_18511.cpp:41:22: error: cannot convert 'std::basic_string<_CharT, _Traits, _Alloc>::c_str<char, std::char_traits<char>, std::allocator<char> >' from type 'const char* (std::basic_string<char>::)() const noexcept' to type 'const char*'
   puts(mmp[cnt].c_str);
                      ^