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ifstream f(strFile); problem???

joker25 (4)
77 C:\Users\dominic\Desktop\prj5\yahoo ex 1.cpp variable `std::ifstream f' has initializer but incomplete type
^^^^thats the error I get and I dont know how to fix it.
heres my code

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#include <iostream>
#include <iomanip>
#include <string>
#include <vector>
#include <iterator>
#include <istream>
using namespace std;

class CDog{
private:
string strOwner;
int weight;
int iStay;
int iCost;
int iCategory;
public:
static int get_perday(int iWeight, int& iCategory)
{
if (iWeight >= 10 && iWeight < 30) {
iCategory = 1;
return 12;
}
else if (iWeight >= 30 && iWeight < 50) {
iCategory = 2;
return 18;
}
else if (iWeight >= 50) {
iCategory = 3;
return 22;
}
iCategory = 0;
return 0;
}
static const int iColNameWidth;
static const int iColWeightWidth;
static const int iColStayWidth;
static const int iColCostWidth;
static const int iColCostPrecision;
//const int& get_stay() const {return iStay;}
//const int& get_weight() const {return weight;}
const int& get_cost() const {return iCost;}
//const string& get_owner() const {return strOwner;}
const int get_category() const {return iCategory;}
CDog():strOwner(""), weight(0), iStay(0){}
friend ostream& operator<<(ostream& o, const CDog& dog)
{
o << "\n" << setw(CDog::iColNameWidth) << dog.strOwner <<
setw(CDog::iColWeightWidth) << dog.weight <<
setw(CDog::iColStayWidth) << dog.iStay <<
setw(CDog::iColCostWidth) << fixed << setprecision(2) << (float)dog.iCost;
return o;
}

// In case the weight of the dog is smaller than 10 there won't be no charges
// or the dog will be denied. Here no charges is assumed!!!!!
friend istream& operator>>(istream& i, CDog& dog)
{
i >> dog.strOwner >> dog.weight >> dog.iStay;
dog.iCost = CDog::get_perday(dog.weight, dog.iCategory) * dog.iStay;
return i;
}
};
const int CDog::iColNameWidth = 20;
const int CDog::iColWeightWidth = 7;
const int CDog::iColStayWidth = 5;
const int CDog::iColCostWidth = 9;
const int CDog::iColCostPrecision = 2;

class CDogs{
private:
vector<CDog> v;
string strFilename;
int iCount;
public:
CDogs(const string& strFile)
{
ifstream f(strFile);
strFilename = strFile;
copy(istream_iterator<CDog>(f), istream_iterator<CDog>(), back_inserter(v));
int iTotal = 0;
int iCategory[4] = {0};
for (unsigned i = 0; i < v.size(); i++) {
iTotal += v[i].get_cost();
iCategory[v[i].get_category()] += 1;
}
cout << "\n" <<
setw(CDog::iColNameWidth) << "Dog Owner" <<
setw(CDog::iColWeightWidth) << "Weight" <<
setw(CDog::iColStayWidth) << "Stay" <<
setw(CDog::iColCostWidth) << "Cost";
copy(v.begin(), v.end(), ostream_iterator<CDog>(cout, ""));
//cout<<"\n"<<"---------------------------… <<
cout << "\n" << v.size() << " dogs total $" << fixed << setprecision(2) << (float)iTotal << " income.";
cout <<"\nThere are"
<< "\n" << iCategory[1] << " dogs in Category " << 1
<< "\n" << iCategory[2] << " dogs in Category " << 2
<< "\n" << iCategory[3] << " dogs in Category " << 3
<< "\n" << iCategory[0] << " dogs outside all Categories ";
}
};

int main()
{
CDogs("a.txt");
cin.get();
}
matsom (288)
You left out #include <fstream> and another thing, ifstream f(strFile); should give an error, because the std::ifstream constructor does not accept std::string object -change it to CString/const char* first
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