vector prob

nattylife · #1 10-Nov-2003, 12:27

hey guys im new here, ive got a prog prob and need to know what im missing here:

ive got a vector of type struct, and i want to read in from a file.
so lets say

CPP / C++ / C Code:

struct entry
{ string key;
   string value;
};

vector<entry> DB;

and i want to read from a file that has only 2 words per index of the vector ie.
input file=

animal cat
plant rose
car ford
etc...

im gonna put it in a while loop but i cant figure out how to use the push_back function to fill the vector with the input... is it something like this?

CPP / C++ / C Code:

ifstream d_file;
      d_file.open("input.txt");
      while(!d_file.eof())
	  {
		  d_file>>d_file[index].key.pushback();  // this wont work
		  d_file>>d_file[index].value.pushback();
                   }

where index is some int used to hold the size of the vector. do i need to use another method to fill this vector?
thanx a bunch!

akupers · #2 15-Nov-2003, 08:41

Code seems ok but try push_back() instead of pushback()
and I suggest not to use 'struct' but 'class' (but that's not really important here)

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