使用C语言实现vector动态数组的实例分享

下面是做项目时实现的一个动态数组，先后加入了好几个之后的项目，下面晒下代码。

头文件：

# ifndef __CVECTOR_H__
# define __CVECTOR_H__
# define MIN_LEN 256
# define CVEFAILED -1
# define CVESUCCESS 0
# define CVEPUSHBACK 1
# define CVEPOPBACK 2
# define CVEINSERT  3
# define CVERM    4
# define EXPANED_VAL 1
# define REDUSED_VAL 2
typedef void *citerator;
typedef struct _cvector *cvector;
# ifdef _cplusplus
# define EXTERN_ extern "C"
# else
# define EXTERN_ extern
# endif
EXTERN_ cvector  cvector_create  (const size_t size              );
EXTERN_ void   cvector_destroy (const cvector cv              );
EXTERN_ size_t  cvector_length  (const cvector cv              );
EXTERN_ int    cvector_pushback (const cvector cv, void *memb        );
EXTERN_ int    cvector_popback (const cvector cv, void *memb        );
EXTERN_ size_t  cvector_iter_at (const cvector cv, citerator iter      );
EXTERN_ int    cvector_iter_val (const cvector cv, citerator iter, void *memb);
EXTERN_ citerator cvector_begin  (const cvector cv              );
EXTERN_ citerator cvector_end   (const cvector cv              );
EXTERN_ citerator cvector_next   (const cvector cv, citerator iter      );
EXTERN_ int    cvector_val_at  (const cvector cv, size_t index, void *memb );
EXTERN_ int    cvector_insert  (const cvector cv, citerator iter, void *memb);
EXTERN_ int    cvector_insert_at(const cvector cv, size_t index, void *memb );
EXTERN_ int    cvector_rm    (const cvector cv, citerator iter      );
EXTERN_ int    cvector_rm_at  (const cvector cv, size_t index       );
/* for test */
EXTERN_ void   cv_info     (const cvector cv              );
EXTERN_ void   cv_print     (const cvector cv              );
#endif /* EOF file cvector.h */

C文件：

# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include <unistd.h>
# define MIN_LEN 256
# define CVEFAILED -1
# define CVESUCCESS 0
# define CVEPUSHBACK 1
# define CVEPOPBACK 2
# define CVEINSERT  3
# define CVERM    4
# define EXPANED_VAL 1
# define REDUSED_VAL 2
typedef void *citerator;
typedef struct _cvector
{
void *cv_pdata;
size_t cv_len, cv_tot_len, cv_size;
} *cvector;
# define CWARNING_ITER(cv, iter, file, func, line) \
do {\
if ((cvector_begin(cv) > iter) || (cvector_end(cv) <= iter)) {\
fprintf(stderr, "var(" #iter ") warng out of range, "\
"at file:%s func:%s line:%d!!/n", file, func, line);\
return CVEFAILED;\
}\
} while (0)
# ifdef _cplusplus
# define EXTERN_ extern "C"
# else
# define EXTERN_ extern
# endif
EXTERN_ cvector  cvector_create  (const size_t size              );
EXTERN_ void   cvector_destroy (const cvector cv              );
EXTERN_ size_t  cvector_length  (const cvector cv              );
EXTERN_ int    cvector_pushback (const cvector cv, void *memb        );
EXTERN_ int    cvector_popback (const cvector cv, void *memb        );
EXTERN_ size_t  cvector_iter_at (const cvector cv, citerator iter      );
EXTERN_ int    cvector_iter_val (const cvector cv, citerator iter, void *memb);
EXTERN_ citerator cvector_begin  (const cvector cv              );
EXTERN_ citerator cvector_end   (const cvector cv              );
EXTERN_ citerator cvector_next   (const cvector cv, citerator iter      );
EXTERN_ int    cvector_val_at  (const cvector cv, size_t index, void *memb );
EXTERN_ int    cvector_insert  (const cvector cv, citerator iter, void *memb);
EXTERN_ int    cvector_insert_at(const cvector cv, size_t index, void *memb );
EXTERN_ int    cvector_rm    (const cvector cv, citerator iter      );
EXTERN_ int    cvector_rm_at  (const cvector cv, size_t index       );
/* for test */
EXTERN_ void   cv_info     (const cvector cv              );
EXTERN_ void   cv_print     (const cvector cv              );
cvector cvector_create(const size_t size)
{
cvector cv = (cvector)malloc(sizeof (struct _cvector));
if (!cv) return NULL;
cv->cv_pdata = malloc(MIN_LEN * size);
if (!cv->cv_pdata)
{
free(cv);
return NULL;
}
cv->cv_size = size;
cv->cv_tot_len = MIN_LEN;
cv->cv_len = 0;
return cv;
}
void cvector_destroy(const cvector cv)
{
free(cv->cv_pdata);
free(cv);
return;
}
size_t cvector_length(const cvector cv)
{
return cv->cv_len;
}
int cvector_pushback(const cvector cv, void *memb)
{
if (cv->cv_len >= cv->cv_tot_len)
{
void *pd_sav = cv->cv_pdata;
cv->cv_tot_len <<= EXPANED_VAL;
cv->cv_pdata = realloc(cv->cv_pdata, cv->cv_tot_len * cv->cv_size);
if (!cv->cv_pdata)
{
cv->cv_pdata = pd_sav;
cv->cv_tot_len >>= EXPANED_VAL;
return CVEPUSHBACK;
}
}
memcpy(cv->cv_pdata + cv->cv_len * cv->cv_size, memb, cv->cv_size);
cv->cv_len++;
return CVESUCCESS;
}
int cvector_popback(const cvector cv, void *memb)
{
if (cv->cv_len <= 0) return CVEPOPBACK;
cv->cv_len--;
memcpy(memb, cv->cv_pdata + cv->cv_len * cv->cv_size, cv->cv_size);
if ((cv->cv_tot_len >= (MIN_LEN << REDUSED_VAL))
&& (cv->cv_len <= (cv->cv_tot_len >> REDUSED_VAL)))
{
void *pd_sav = cv->cv_pdata;
cv->cv_tot_len >>= EXPANED_VAL;
cv->cv_pdata = realloc(cv->cv_pdata, cv->cv_tot_len * cv->cv_size);
if (!cv->cv_pdata)
{
cv->cv_tot_len <<= EXPANED_VAL;
cv->cv_pdata = pd_sav;
return CVEPOPBACK;
}
}
return CVESUCCESS;
}
size_t cvector_iter_at(const cvector cv, citerator iter)
{
CWARNING_ITER(cv, iter, __FILE__, __func__, __LINE__);
return (iter - cv->cv_pdata) / cv->cv_size;
}
int cvector_iter_val(const cvector cv, citerator iter, void *memb)
{
CWARNING_ITER(cv, iter, __FILE__, __func__, __LINE__);
memcpy(memb, iter, cv->cv_size);
return 0;
}
citerator cvector_begin(const cvector cv)
{
return cv->cv_pdata;
}
citerator cvector_end(const cvector cv)
{
return cv->cv_pdata + (cv->cv_size * cv->cv_len);
}
static inline void cvmemove_foreward(const cvector cv, void *from, void *to)
{
size_t size = cv->cv_size;
void *p;
for (p = to; p >= from; p -= size) memcpy(p + size, p, size);
return;
}
static inline void cvmemove_backward(const cvector cv, void *from, void *to)
{
memcpy(from, from + cv->cv_size, to - from);
return;
}
int cvector_insert(const cvector cv, citerator iter, void *memb)
{
CWARNING_ITER(cv, iter, __FILE__, __func__, __LINE__);
if (cv->cv_len >= cv->cv_tot_len)
{
void *pd_sav = cv->cv_pdata;
cv->cv_tot_len <<= EXPANED_VAL;
cv->cv_pdata = realloc(cv->cv_pdata, cv->cv_tot_len * cv->cv_size);
if (!cv->cv_pdata)
{
cv->cv_pdata = pd_sav;
cv->cv_tot_len >>= EXPANED_VAL;
return CVEINSERT;
}
}
cvmemove_foreward(cv, iter, cv->cv_pdata + cv->cv_len * cv->cv_size);
memcpy(iter, memb, cv->cv_size);
cv->cv_len++;
return CVESUCCESS;
}
int cvector_insert_at(const cvector cv, size_t index, void *memb)
{
citerator iter;
if (index >= cv->cv_tot_len)
{
cv->cv_len = index + 1;
while (cv->cv_len >= cv->cv_tot_len) cv->cv_tot_len <<= EXPANED_VAL;
cv->cv_pdata = realloc(cv->cv_pdata, cv->cv_tot_len * cv->cv_size);
iter = cv->cv_pdata + cv->cv_size * index;
memcpy(iter, memb, cv->cv_size);
}
else
{
iter = cv->cv_pdata + cv->cv_size * index;
cvector_insert(cv, iter, memb);
}
return 0;
}
citerator cvector_next(const cvector cv, citerator iter)
{
return iter + cv->cv_size;
}
int cvector_val(const cvector cv, citerator iter, void *memb)
{
memcpy(memb, iter, cv->cv_size);
return 0;
}
int cvector_val_at(const cvector cv, size_t index, void *memb)
{
memcpy(memb, cv->cv_pdata + index * cv->cv_size, cv->cv_size);
return 0;
}
int cvector_rm(const cvector cv, citerator iter)
{
citerator from;
citerator end;
CWARNING_ITER(cv, iter, __FILE__, __func__, __LINE__);
from = iter;
end = cvector_end(cv);
memcpy(from, from + cv->cv_size, end - from);
cv->cv_len--;
if ((cv->cv_tot_len >= (MIN_LEN << REDUSED_VAL))
&& (cv->cv_len <= (cv->cv_tot_len >> REDUSED_VAL)))
{
void *pd_sav = cv->cv_pdata;
cv->cv_tot_len >>= EXPANED_VAL;
cv->cv_pdata = realloc(cv->cv_pdata, cv->cv_tot_len * cv->cv_size);
if (!cv->cv_pdata)
{
cv->cv_tot_len <<= EXPANED_VAL;
cv->cv_pdata = pd_sav;
return CVERM;
}
}
return CVESUCCESS;
}
int cvector_rm_at(const cvector cv, size_t index)
{
citerator iter;
iter = cv->cv_pdata + cv->cv_size * index;
CWARNING_ITER(cv, iter, __FILE__, __func__, __LINE__);
return cvector_rm(cv, iter);
}
void cv_info(const cvector cv)
{
printf("/n/ntot :%s : %d/n", __func__, cv->cv_tot_len);
printf("len :%s : %d/n",   __func__, cv->cv_len);
printf("size:%s : %d/n/n",  __func__, cv->cv_size);
return;
}
void cv_print(const cvector cv)
{
int num;
citerator iter;
if (cvector_length(cv) == 0)
fprintf(stderr, "file:%s func:%s line:%d error, null length cvector!!/n", __FILE__, __func__, __LINE__);
for (iter = cvector_begin(cv);
iter != cvector_end(cv);
iter = cvector_next(cv, iter))
{
cvector_iter_val(cv, iter, &num);
printf("var:%d at:%d/n", num, cvector_iter_at(cv, iter));
}
return;
}

改进版
上面那份代码是在Linux下写的，如果是在Windows的Visul C++环境下编译似乎会出些问题，所以特别做了个改进版：
下面是更新后的代码：

cvector.h

# ifndef __CVECTOR_H__
# define __CVECTOR_H__
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# define MIN_LEN 256
# define CVEFAILED -1
# define CVESUCCESS 0
# define CVEPUSHBACK 1
# define CVEPOPBACK 2
# define CVEINSERT  3
# define CVERM    4
# define EXPANED_VAL 1
# define REDUSED_VAL 2
typedef void *citerator;
typedef struct _cvector *cvector;
# ifdef __cplusplus
extern "C" {
# endif
cvector  cvector_create  (const size_t size              );
void   cvector_destroy (const cvector cv              );
size_t  cvector_length  (const cvector cv              );
int    cvector_pushback (const cvector cv, void *memb        );
int    cvector_popback (const cvector cv, void *memb        );
size_t  cvector_iter_at (const cvector cv, citerator iter      );
int    cvector_iter_val (const cvector cv, citerator iter, void *memb);
citerator cvector_begin  (const cvector cv              );
citerator cvector_end   (const cvector cv              );
citerator cvector_next   (const cvector cv, citerator iter      );
int    cvector_val_at  (const cvector cv, size_t index, void *memb );
int    cvector_insert  (const cvector cv, citerator iter, void *memb);
int    cvector_insert_at(const cvector cv, size_t index, void *memb );
int    cvector_rm    (const cvector cv, citerator iter      );
int    cvector_rm_at  (const cvector cv, size_t index       );
/* for test */
void   cv_info     (const cvector cv              );
void   cv_print     (const cvector cv              );
# ifdef __cplusplus
}
# endif
#endif /* EOF file cvector.h */

cvector.c

#include "cvector.h"
#ifndef __gnu_linux__
#define __func__ "unknown"
#define inline __forceinline
#endif
# define CWARNING_ITER(cv, iter, file, func, line) \
do {\
if ((cvector_begin(cv) > iter) || (cvector_end(cv) <= iter)) {\
fprintf(stderr, "var(" #iter ") warng out of range, "\
"at file:%s func:%s line:%d!!\n", file, func, line);\
return CVEFAILED;\
}\
} while (0)
struct _cvector
{
void *cv_pdata;
size_t cv_len, cv_tot_len, cv_size;
};
cvector cvector_create(const size_t size)
{
cvector cv = (cvector)malloc(sizeof (struct _cvector));
if (!cv) return NULL;
cv->cv_pdata = malloc(MIN_LEN * size);
if (!cv->cv_pdata)
{
free(cv);
return NULL;
}
cv->cv_size = size;
cv->cv_tot_len = MIN_LEN;
cv->cv_len = 0;
return cv;
}
void cvector_destroy(const cvector cv)
{
free(cv->cv_pdata);
free(cv);
return;
}
size_t cvector_length(const cvector cv)
{
return cv->cv_len;
}
int cvector_pushback(const cvector cv, void *memb)
{
if (cv->cv_len >= cv->cv_tot_len)
{
void *pd_sav = cv->cv_pdata;
cv->cv_tot_len <<= EXPANED_VAL;
cv->cv_pdata = realloc(cv->cv_pdata, cv->cv_tot_len * cv->cv_size);
if (!cv->cv_pdata)
{
cv->cv_pdata = pd_sav;
cv->cv_tot_len >>= EXPANED_VAL;
return CVEPUSHBACK;
}
}
memcpy((char *)cv->cv_pdata + cv->cv_len * cv->cv_size, memb, cv->cv_size);
cv->cv_len++;
return CVESUCCESS;
}
int cvector_popback(const cvector cv, void *memb)
{
if (cv->cv_len <= 0) return CVEPOPBACK;
cv->cv_len--;
memcpy(memb, (char *)cv->cv_pdata + cv->cv_len * cv->cv_size, cv->cv_size);
if ((cv->cv_tot_len >= (MIN_LEN << REDUSED_VAL))
&& (cv->cv_len <= (cv->cv_tot_len >> REDUSED_VAL)))
{
void *pd_sav = cv->cv_pdata;
cv->cv_tot_len >>= EXPANED_VAL;
cv->cv_pdata = realloc(cv->cv_pdata, cv->cv_tot_len * cv->cv_size);
if (!cv->cv_pdata)
{
cv->cv_tot_len <<= EXPANED_VAL;
cv->cv_pdata = pd_sav;
return CVEPOPBACK;
}
}
return CVESUCCESS;
}
size_t cvector_iter_at(const cvector cv, citerator iter)
{
CWARNING_ITER(cv, iter, __FILE__, __func__, __LINE__);
return ((char *)iter - (char *)cv->cv_pdata) / cv->cv_size;
}
int cvector_iter_val(const cvector cv, citerator iter, void *memb)
{
CWARNING_ITER(cv, iter, __FILE__, __func__, __LINE__);
memcpy(memb, iter, cv->cv_size);
return 0;
}
citerator cvector_begin(const cvector cv)
{
return cv->cv_pdata;
}
citerator cvector_end(const cvector cv)
{
return (char *)cv->cv_pdata + (cv->cv_size * cv->cv_len);
}
static inline void cvmemove_foreward(const cvector cv, void *from, void *to)
{
size_t size = cv->cv_size;
char *p;
for (p = (char *)to; p >= (char *)from; p -= size) memcpy(p + size, p, size);
return;
}
static inline void cvmemove_backward(const cvector cv, void *from, void *to)
{
memcpy(from, (char *)from + cv->cv_size, (char *)to - (char *)from);
return;
}
int cvector_insert(const cvector cv, citerator iter, void *memb)
{
CWARNING_ITER(cv, iter, __FILE__, __func__, __LINE__);
if (cv->cv_len >= cv->cv_tot_len)
{
void *pd_sav = cv->cv_pdata;
cv->cv_tot_len <<= EXPANED_VAL;
cv->cv_pdata = realloc(cv->cv_pdata, cv->cv_tot_len * cv->cv_size);
if (!cv->cv_pdata)
{
cv->cv_pdata = pd_sav;
cv->cv_tot_len >>= EXPANED_VAL;
return CVEINSERT;
}
}
cvmemove_foreward(cv, iter, (char *)cv->cv_pdata + cv->cv_len * cv->cv_size);
memcpy(iter, memb, cv->cv_size);
cv->cv_len++;
return CVESUCCESS;
}
int cvector_insert_at(const cvector cv, size_t index, void *memb)
{
citerator iter;
if (index >= cv->cv_tot_len)
{
cv->cv_len = index + 1;
while (cv->cv_len >= cv->cv_tot_len) cv->cv_tot_len <<= EXPANED_VAL;
cv->cv_pdata = realloc(cv->cv_pdata, cv->cv_tot_len * cv->cv_size);
iter = (char *)cv->cv_pdata + cv->cv_size * index;
memcpy(iter, memb, cv->cv_size);
}
else
{
iter = (char *)cv->cv_pdata + cv->cv_size * index;
cvector_insert(cv, iter, memb);
}
return 0;
}
citerator cvector_next(const cvector cv, citerator iter)
{
return (char *)iter + cv->cv_size;
}
int cvector_val(const cvector cv, citerator iter, void *memb)
{
memcpy(memb, iter, cv->cv_size);
return 0;
}
int cvector_val_at(const cvector cv, size_t index, void *memb)
{
memcpy(memb, (char *)cv->cv_pdata + index * cv->cv_size, cv->cv_size);
return 0;
}
int cvector_rm(const cvector cv, citerator iter)
{
citerator from;
citerator end;
CWARNING_ITER(cv, iter, __FILE__, __func__, __LINE__);
from = iter;
end = cvector_end(cv);
memcpy(from, (char *)from + cv->cv_size, (char *)end - (char *)from);
cv->cv_len--;
if ((cv->cv_tot_len >= (MIN_LEN << REDUSED_VAL))
&& (cv->cv_len <= (cv->cv_tot_len >> REDUSED_VAL)))
{
void *pd_sav = cv->cv_pdata;
cv->cv_tot_len >>= EXPANED_VAL;
cv->cv_pdata = realloc(cv->cv_pdata, cv->cv_tot_len * cv->cv_size);
if (!cv->cv_pdata)
{
cv->cv_tot_len <<= EXPANED_VAL;
cv->cv_pdata = pd_sav;
return CVERM;
}
}
return CVESUCCESS;
}
int cvector_rm_at(const cvector cv, size_t index)
{
citerator iter;
iter = (char *)cv->cv_pdata + cv->cv_size * index;
CWARNING_ITER(cv, iter, __FILE__, __func__, __LINE__);
return cvector_rm(cv, iter);
}
void cv_info(const cvector cv)
{
printf("\n\ntot :%s : %d\n", __func__, cv->cv_tot_len);
printf("len :%s : %d\n",   __func__, cv->cv_len);
printf("size:%s : %d\n\n",  __func__, cv->cv_size);
return;
}
void cv_print(const cvector cv)
{
int num;
citerator iter;
if (cvector_length(cv) == 0)
fprintf(stderr, "file:%s func:%s line:%d error, null length cvector!!\n", __FILE__, __func__, __LINE__);
for (iter = cvector_begin(cv);
iter != cvector_end(cv);
iter = cvector_next(cv, iter))
{
cvector_iter_val(cv, iter, &num);
printf("var:%d at:%d\n", num, cvector_iter_at(cv, iter));
}
return;
}

main.cpp

#include "cvector.h"
int main()
{
int i = 1;
cvector cv = cvector_create(sizeof(int));
cvector_pushback(cv, &i);
cvector_pushback(cv, &i);
cvector_pushback(cv, &i);
cvector_pushback(cv, &i);
cv_print(cv);
cvector_destroy(cv);
return 0;
}

您可能感兴趣的文章:

• C语言完美实现动态数组代码分享
• C语言构建动态数组完整实例
• c语言动态数组示例
• c语言字符数组与字符串的使用详解
• C语言运算符优先级列表(超详细)
• c语言冒泡排序法代码
• 深入分析C语言中结构体指针的定义与引用详解
• C语言中system()函数的用法总结
• 基于C语言实现的贪吃蛇游戏完整实例代码
• C语言十进制转二进制代码实例
• C语言socket编程开发应用示例
• linux根据pid获取进程名和获取进程pid(c语言获取pid)
• C语言动态数组的使用实现代码