undefined reference to `Student::sortStudentsByid(Student*)'
时间: 2023-10-17 09:55:07 浏览: 49
The error message "undefined reference to `Student::sortStudentsByid(Student*)'" typically occurs when you have declared a member function in the class definition but haven't provided a definition or implementation for it.
To resolve this error, you need to provide an implementation for the `sortStudentsByid` function in the `Student` class. Here's an example:
```cpp
class Student {
public:
// member variables and other member functions...
void sortStudentsByid(Student* students) {
// implementation of sorting logic
}
};
```
Make sure to replace the comment with the actual implementation of the sorting logic for your students.
If you have already provided the implementation but still encounter the error, ensure that the implementation is included in the compilation process. Sometimes, forgetting to compile or link a file that contains the implementation can result in this error. Double-check your build configuration or makefile to ensure all necessary source files are included.
If you continue to face issues, providing more details about your code and build process will help me assist you further.