错误:“*”标记前应为“)”

我有这个文件( memory .h )

#ifndef MEMORY_H
#define MEMORY_H

#ifdef  __cplusplus
extern "C" {
#endif

    typedef struct mmemory {
        int* cells;
        int* current_cell;
        int cells_number;
    } memory;

    void memory_init(memory* mymemory, int size);
    void step_left(memory* mymemory, int steps);
    void step_right(memory* mymemory, int steps);
    void cell_inc(memory* mymemory, int quantity);
    void print_cell(memory* mymemory);
    void get_char(memory* mymemory);


#ifdef  __cplusplus
}
#endif

#endif  /* MEMORY_H */

以及这个实现文件( memory.c )

#include <stdlib.h>
#include "memory.h"

void
memory_init (memory* mymemory, int size)
{
    mymemory->cells = (int*) malloc (sizeof (int) * size);
    mymemory->cells_number = size;
    mymemory->current_cell = (int*) ((mymemory->cells_number / 2) * sizeof (int));
}
... //other function definitions follow

内存.c 对于每个函数定义,我都会得到这个错误

src/memory.c:5:错误:“*”标记前应为“)”

其中第5行是的函数定义 memory_init()