如何用CLION在Mac OS X上向EOF发出信号

我最近开始学习C ，并一直关注该书加速C 。我在第3章中，试图运行书中给出的程序。我正在Mac OS上的Clion工作。代码如下：

#include "iomanip"
#include "ios"
#include "iostream"
#include "string"
#include "vector"
#include "algorithm"
using std::cin; using std::cout;
using std::endl; using std::string;
using std::setprecision; using std::streamsize;
using std::vector; using std::sort;
int main()
{
    // Ask for and read student's name
    cout << "Please enter your name: ";
    string name;
    cin >> name;
    cout << "Hello, "<< name << "!"<< endl;
    // Ask for and read mid-term and final grades
    cout << "Please enter your mid-term and final grades: ";
    double midterm_grade, final_grade;
    cin >>midterm_grade >> final_grade;
    // Ask for homework grades
    cout << "Enter all your homework grades, followed by end-of-file";
    vector<double> homework;
    double x;
    //Invariant : Homework contains all homework grades read so far
    while (cin >> x)
    {
        homework.push_back(x);
    }
    // Check that the student entered some homework grade
    typedef vector<double>:: size_type vector_size;
    vector_size size = homework.size();
    if(size == 0)
    {
        cout << "You must enter your grades. Please try again" << endl;
        return 1;
    }
// Sort the grades
    sort(homework.begin(), homework.end());
// Compute the median output grade
    vector_size mid = size/2;
    double median;
    median = size % 2 == 0 ? (homework[mid] + homework[mid-1])/2 : homework[mid];
// Compute and write the final grade
    streamsize prec = cout.precision();
    cout << "Your final grade is :" << setprecision(3) << 0.2*midterm_grade + 0.4*final_grade + 0.4*median<< setprecision(prec) << endl;
    return 0;
    }//

该程序编译良好，我可以输入名称以及等级。但是，当我按CTRL D（在MAC OSX终端中还会向stdin发出信号？）或cmd d（也建议）时，当我按CTRL D（已确认的EOF）时（也建议）。

当我按CTRL D时，该程序会重新启动。在按CMD D时，它具有一些异常的行为。有时可能会起作用，而有时则无法使用。我还试图查看preverences-> keymap，但找不到要设置的参数。

我认为我在这里缺少一些真正的基本关键设置。感谢您的帮助。