C模拟C++的类

#include <stdio.h>

#ifndef C_Class
#define C_Class struct
#endif

C_Class Rf {
    int power;

    void (*set_power)(C_Class Rf *p, int power);
};

void set_power(C_Class Rf *p, int power)
{
    p->power = power;
}

int main()
{
    C_Class Rf rf_test;

    rf_test.set_power = set_power; // function pointer init
    rf_test.set_power(&rf_test, 5);
    printf("%d\n", rf_test.power);

    return 0;
}