Error in Accelerated c++ 4.1

rajroshi (30)
I am new to c++ programming and I started with
Accelerated c++
as beginning book as it was recommended in this forum. The book was going ok until I reached chapter 4.1
"Organizing Computation"
I am not able to compile the code even I have tried copy paste. Don't know what's going wrong.

I am using dev-c++ compiler 4.9.
here is the compiler message-

C:\c\grade.cpp In function `double median(std::vector<double, std::allocator<double> >)':

20 C:\c\grade.cpp `domain_error' undeclared (first use this function)
(Each undeclared identifier is reported only once for each function it appears in.)

C:\c\grade.cpp In function `double grade(double, double, const std::vector<double, std::allocator<double> >&)':

37 C:\c\grade.cpp `domain_error' undeclared (first use this function)

37 C:\c\grade.cpp At global scope:

44 C:\c\grade.cpp expected constructor, destructor, or type conversion before '&' token

44 C:\c\grade.cpp expected `,' or `;' before '&' token

Here is the code.

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#include <algorithm>
#include <iomanip>
#include <ios>
#include <iostream>
#include <string>
#include <vector>
#include <stdexcept>

using std::cin; using std::sort;
using std::cout; using std::streamsize;
using std::endl; using std::string;
using std::setprecision; using std::vector;

double median(vector<double> vec)
{
       typedef vector<double>::size_type vec_sz;
       vec_sz size = vec.size();
       if (size == 0)

         throw domain_error("median of an empty vector");
        
         sort(vec.begin(), vec.end());
         vec_sz mid = size / 2;
         return size % 2 == 0 ? (vec[mid] + vec[mid-1]) / 2 : vec[mid];
}

// compute a student's overall grade from midterm and final exam grades and homework grade
double grade(double midterm, double final, double homework)
{
       return midterm*0.2+final*0.4+homework*0.4;
}

double grade(double midterm, double final, const vector<double>& hw)
{
       
                    if (hw.size() == 0)
                    throw domain_error("student has done no homework");
                    
                    return grade(midterm, final, median(hw));
}


// read homework grades from an input stream into a vector<double>
        istream& read_hw(istream& in, vector<double>& hw)
{
        if (in) {
// get rid of previous contents
                       hw.clear() ;
// read homework grades
                       double x;
                       while (in >> x)
                       hw.push_back(x);
// clear the stream so that input will work for the next student
                       in.clear();
}
                       return in;
}

int main()
{
    // ask for and read the student's name
               cout << "Please enter your first name: ";
               string name;
               cin >> name;
               cout << "Hello, " << name << "!" << endl;
// ask for and read the midterm and final grades
               cout << "Please enter your midterm and final exam grades: ";
               double midterm, final;
               cin >> midterm >> final;
// ask for the homework grades
               cout << "Enter all your homework grades, "
                       "followed by end-of-file: ";
                       vector<double> homework;
// read the homework grades
                     if (cin) {
// get rid of previous contents
                               homework.clear() ;
// read homework grades
                               double x;
while (cin >> x)
homework.push_back(x);
// clear the stream so that input will work for the next student
cin.clear();
}
// compute and generate the final grade, if possible

double final_grade = grade(midterm, final, homework);
streamsize prec = cout.precision();
cout << "Your final grade is " << setprecision(3)
<< final_grade << setprecision(prec) << endl;


    return 0;
}


So any help will be appreciated. As you guys are experienced c++ programmer and I am totally novice so please excuse me if I am making any silly mistake.

Thanx
Bazzy (6281)
domain_error is std::domain_error
BTW, Dev-C++ is outdated. See http://www.cplusplus.com/forum/articles/7263/
rajroshi (30)
Thanx Bazzy,

after adding std::domain_error; std::istream; it is working fine.

Thanx for the information about dev c++, I have visual c++ 2008 but it is hard to use that for me yet. But now I will try to use that.

Regards
Bazzy (6281)
You can try Code::Blocks
agajantorayev (14)
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