C++引入.h报错

Question

初学c++想封装一个类引入.h报错

Student.h文件

#ifndef C_STUDENT_H
#define C_STUDENT_H
class Student{
    public:
        void data();
};
#endif //C_STUDENT_H

Student.cpp文件

#include "Student.h"

void Student::data()
{
    printf("hello");
}

main.cpp文件

#include <iostream>
#include "Student.h"
int main() {
    Student student;
    student.data();
    return 0;
}

报错为

undefined symbols for architecture x86_64: "Student::data()",
referenced from:

 _main in main-c01688.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to

see invocation)

Answer 1

先把代码排版好

根据你的错误信息，你的编译的命令行应该有误，顺便一道贴出来看看

个人猜测，你是没有加入Student.cpp的编译：

cc main.cpp Student.cpp -o a.out

Answer 2

先把代码排版好