class GradeBook
{
public:
//constant -- number of students who took the test
const static int students = 0;
//constructor initialize course name and array of grades
GradeBook( string, const int [] );
void setCourseName( string ); //function to set the course name
string getCourseName(); //function to get the course name
void displayMessage(); //display a welcome message
void processGrades(); //perform various operations on the grade data
int getMinimum(); //find the minimum grade for the test
int getMaximum(); //find the maximum grade for the test
double getAverage(); //determine the average grade for the test
void outputBarChart(); //output bar chart of grade distribution
void outputGrades(); //output the contents of the grades array
private:
string courseName; // course name for this grade book
int grades[ 10 ]; // array of student grades
};
显示students变量无法编译通过
错误代码 error C2252: 'students' : pure specifier can only be specified for functions
求大神解答,很多书上都这么写的