Can't compile C++ program on Ubuntu

I used OSX to program in C++, but I am new to C++ compiler on Linux. I have a program consisting two .cpp files and one .h file that are compiled and run successfully on my Mac, but get compiling errors on Ubuntu. I did install gcc and g++ compilers and build-essential, and also apt-get update and update, searched online, but in no vain. Does my Ubuntu lack of some library packages or some extra configuration needed to fix the problem?

Here is my program's compiling errors on Ubuntu:

WordCombine.cpp: In function ‘int BuildTrie(const string&, Trie*&, std::vector<std::basic_string<char> >&)’:
WordCombine.cpp:21:37: error: no matching function for call to ‘std::basic_ifstream<char>::basic_ifstream(const string&, const openmode&)’
  ifstream ifs(filename, ifstream::in);
                                     ^
WordCombine.cpp:21:37: note: candidates are:
In file included from WordCombine.cpp:10:0:
/usr/include/c++/4.8/fstream:467:7: note: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const char*, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::ios_base::openmode = std::_Ios_Openmode]
       basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in)
       ^
/usr/include/c++/4.8/fstream:467:7: note:   no known conversion for argument 1 from ‘const string {aka const std::basic_string<char>}’ to ‘const char*’
/usr/include/c++/4.8/fstream:453:7: note: std::basic_ifstream<_CharT, _Traits>::basic_ifstream() [with _CharT = char; _Traits = std::char_traits<char>]
       basic_ifstream() : __istream_type(), _M_filebuf()
       ^
/usr/include/c++/4.8/fstream:453:7: note:   candidate expects 0 arguments, 2 provided
/usr/include/c++/4.8/fstream:427:11: note: std::basic_ifstream<char>::basic_ifstream(const std::basic_ifstream<char>&)
     class basic_ifstream : public basic_istream<_CharT, _Traits>
           ^
/usr/include/c++/4.8/fstream:427:11: note:   candidate expects 1 argument, 2 provided

Here is my g++ -v info:

Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.2-19ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)