This example comes from
Accelerated C++. I have underlined the problematic parts.
#include <algorithm>
#include <iomanip>
#include <ios>
#include <stdexcept>
#include <string>
#include <vector>
#include "grade.h"
#include "Student_info.h"
using std::cin; using std::setprecision;
using std::cout; using std::sort;
using std::domain_error; using std::streamsize;
using std::endl; using std::string;
using std::max; using std::vector;
int main()
{
vector<Student_info> students;
Student_info record;
string::
size_type maxlen = 0;
while (read(cin, record))
{
maxlen = max(maxlen, record.name.size());
students.push_back(record);
}
// alphabetize the student records
sort(students.
begin(), students.
end(), compare);
// write the name and grades
for (vector<Student_info>::size_type i = 0;
i != students.size(); ++i)
{
// write the name, padded on the right to maxlen + 1 characters
cout << students
.name
<< string(maxlen + 1 - students.name.size(), ' ');
// compute and write the grade
try {
double final_grade = grade(students);
streamsize prec = cout.precision();
cout << setprecision(3) << final_grade
<< setprecision(prec);
} catch (domain_error e) {
cout << e.what();
}
cout << endl;
}
return 0;
}
