c++ - How to create a function that reads in multiple files? -

hi im working on application want create functions reads in files ex.

readfiles() {     f1, f2=null, f3=null; }  

but i'm having hard time getting multiple files load. make function reads in files , sets them specified variable use in other functions within program. or ideas great. again! ps. not homework assignment.

i start writing function can read 1 file. call function function knows files need read.

for example, assuming files aren't enormouse (gigabytes large), function reads file single string:

 std::string readfile(std::string name)  {      ifstream f(name.c_str());      std::stream tmp;      std::stream res;      while(getline(f, tmp)      {        res += tmp;      }      return res;  }    void somefunc()  {     std::string file1 = readfile("file1.txt");     std::string file2 = readfile("file2.txt");  } 

of course, if file list of integers, may want read data vector of integer instead. if content more complex, reading vector or struct or class work. basic principle applies [assuming several files have same general type of content @ all, of course].