优化了命名

This commit is contained in:
lzy
2024-04-28 13:10:56 +08:00
parent d75a518c0f
commit ba9f2e37a7
155 changed files with 0 additions and 0 deletions

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# 方便起见一般都会先定义编译器链接器
CC = gcc
LD = gcc
# 正则表达式表示目录下所有.c文件相当于SRCS = main.c a.c b.c
SRCS = $(wildcard *.c)
# OBJS表示SRCS中把列表中的.c全部替换为.o相当于OBJS = main.o a.o b.o
OBJS = $(patsubst %c, %o, $(SRCS))
# 可执行文件的名字
TARGET = main
# .PHONE伪目标具体含义百度一下一大堆介绍
.PHONY:all clean
# 要生成的目标文件
all: $(TARGET)
# 第一行依赖关系冒号后面为依赖的文件相当于Hello: main.o a.o b.o
# 第二行规则:$@表示目标文件,$^表示所有依赖文件,$<表示第一个依赖文件
$(TARGET): $(OBJS)
$(LD) -o $@ $^
# 上一句目标文件依赖一大堆.o文件这句表示所有.o都由相应名字的.c文件自动生成
%.o:%.c
$(CC) -c $^
# make clean删除所有.o和目标文件
clean:
rm -f $(OBJS) $(TARGET)

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#include <stdio.h>
#include <stdlib.h>
#include "queue.h"
int main()
{
queue *sq;
datatype arr[] = {2, 34, 89, 12};
int i;
sq = qu_create();
if (NULL == sq)
exit(1);
for (i = 0; i < sizeof(arr) / sizeof(*arr); i++)
qu_enqueue(sq, &arr[i]);
qu_travel(sq);
datatype tmp;
qu_dequeue(sq, &tmp);
printf("DEQUEUE:%d\n", tmp);
#if 0
datatype tmp = 100;
int ret;
ret = qu_enqueue(sq, &tmp);
if (-1 == ret)
printf("Queue is full!\n");
else
qu_travel(sq);
#endif
qu_destroy(sq);
exit(0);
}

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#include <stdio.h>
#include <stdlib.h>
#include "queue.h"
queue *qu_create()
{
queue *sq;
sq = malloc(sizeof(*sq));
if (NULL == sq)
return NULL;
sq->head = 0;
sq->tail = 0;
return sq;
}
int qu_isempty(queue *sq)
{
return (sq->head == sq->tail);
}
int qu_enqueue(queue *sq, datatype *x)
{
if ((sq->tail + 1) % MAXSIZE == sq->head)
return -1;
sq->tail = (sq->tail + 1) % MAXSIZE;
sq->data[sq->tail] = *x;
return 0;
}
int qu_dequeue(queue *sq, datatype *x)
{
if (qu_isempty(sq))
return -1;
sq->head = (sq->head + 1) % MAXSIZE;
*x = sq->data[sq->head];
return 0;
}
void qu_travel(queue *sq)
{
if (sq->head == sq->tail)
return;
int i;
i = (sq->head + 1) % MAXSIZE;
while (i != sq->tail)
{
printf("%d ", sq->data[i]);
i = (i + 1) % MAXSIZE;
}
printf("%d \n", sq->data[i]);
}
void qu_clear(queue *sq)
{
sq->head = sq->tail;
}
void qu_destroy(queue *sq)
{
free(sq);
}

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#ifndef QUEUE_H__
#define QUEUE_H__
#define MAXSIZE 5
typedef int datatype;
typedef struct node_st
{
datatype data[MAXSIZE];
int head, tail;
} queue;
queue *qu_create();
int qu_isempty();
int qu_enqueue(queue *, datatype *);
int qu_dequeue(queue *, datatype *);
void qu_travel(queue *);
void qu_clear(queue *);
void qu_destroy(queue *);
#endif

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# 方便起见一般都会先定义编译器链接器
CC = gcc
LD = gcc
# 正则表达式表示目录下所有.c文件相当于SRCS = main.c a.c b.c
SRCS = $(wildcard *.c)
# OBJS表示SRCS中把列表中的.c全部替换为.o相当于OBJS = main.o a.o b.o
OBJS = $(patsubst %c, %o, $(SRCS))
# 可执行文件的名字
TARGET = main
# .PHONE伪目标具体含义百度一下一大堆介绍
.PHONY:all clean
# 要生成的目标文件
all: $(TARGET)
# 第一行依赖关系冒号后面为依赖的文件相当于Hello: main.o a.o b.o
# 第二行规则:$@表示目标文件,$^表示所有依赖文件,$<表示第一个依赖文件
$(TARGET): $(OBJS)
$(LD) -o $@ $^
# 上一句目标文件依赖一大堆.o文件这句表示所有.o都由相应名字的.c文件自动生成
%.o:%.c
$(CC) -c $^
# make clean删除所有.o和目标文件
clean:
rm -f $(OBJS) $(TARGET)

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "llist.h"
LLIST *llist_create(int initsize)
{
LLIST *new;
new = malloc(sizeof(*new)); // !!! 不是sizeof(initsize),也不是new,是*new
if (NULL == new)
return NULL;
new->size = initsize;
new->head.prev = &new->head;
new->head.next = &new->head;
return new;
}
int llist_insert(LLIST *ptr, const void *data, int mode)
{
struct llist_node_st *newnode;
newnode = malloc(sizeof(*newnode) + ptr->size); // -4
if (NULL == newnode)
return -1;
memcpy(newnode->data, data, ptr->size);
if (LLIST_FORWARD == mode)
{
newnode->prev = &ptr->head;
newnode->next = ptr->head.next;
}
else if (LLIST_BACKWARD == mode)
{
newnode->prev = ptr->head.prev;
newnode->next = &ptr->head;
}
else // error
{
return -3;
}
// !!! 妙啊
newnode->next->prev = newnode;
newnode->prev->next = newnode;
return 0;
}
static struct llist_node_st *find_(LLIST *ptr, const void *key, llist_cmp *cmp)
{
struct llist_node_st *cur;
for (cur = ptr->head.next; cur != &ptr->head; cur = cur->next)
{
if (0 == cmp(key, cur->data))
break;
}
return cur; // 找不到的时候返回的cur就是ptr返回NULL
}
void *llist_find(LLIST *ptr, const void *key, llist_cmp *cmp)
{
struct llist_node_st *node;
node = find_(ptr, key, cmp);
if (node == &ptr->head)
return NULL;
return node->data;
}
int llist_delete(LLIST *ptr, const void *key, llist_cmp *cmp)
{
struct llist_node_st *node;
node = find_(ptr, key, cmp);
if (node == &ptr->head)
return -1;
// !!!
node->prev->next = node->next;
node->next->prev = node->prev;
free(node);
return 0;
}
int llist_fetch(LLIST *ptr, const void *key, llist_cmp *cmp, void *data)
{
struct llist_node_st *node;
node = find_(ptr, key, cmp);
if (node == &ptr->head)
return -1;
node->next->prev = node->prev;
node->prev->next = node->next;
if (data != NULL)
memcpy(data, node->data, ptr->size);
free(node);
return 0;
}
void llist_travel(LLIST *ptr, llist_op *op)
{
struct llist_node_st *cur;
for (cur = ptr->head.next; cur != &ptr->head; cur = cur->next)
op(cur->data);
}
void llist_destroy(LLIST *ptr)
{
struct llist_node_st *cur, *next;
for (cur = ptr->head.next; cur != &ptr->head; cur = next)
{
next = cur->next;
free(cur);
}
free(ptr);
}

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#ifndef LLIST_H__
#define LLIST_H__
#define LLIST_FORWARD 1
#define LLIST_BACKWARD 2
// !!! 变长结构体
struct llist_node_st
{
struct llist_node_st *prev;
struct llist_node_st *next;
// data要放在最后
char data[1]; // 占位符数据的起始。C99才只是[0]
};
typedef struct
{
int size;
struct llist_node_st head;
} LLIST;
typedef void llist_op(const void *);
typedef int llist_cmp(const void *, const void *);
LLIST *llist_create(int initsize);
int llist_insert(LLIST *ptr, const void *data, int mode);
void *llist_find(LLIST *ptr, const void *key, llist_cmp *);
int llist_delete(LLIST *, const void *key, llist_cmp *);
int llist_fetch(LLIST *, const void *key, llist_cmp *, void *data);
void llist_travel(LLIST *ptr, llist_op *op);
void llist_destroy(LLIST *ptr);
#endif

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#include <stdio.h>
#include <stdlib.h>
#include "queue.h"
#define NAMESIZE 32
struct score_st
{
int id;
char name[NAMESIZE];
int math;
int chinese;
};
static int print_s(void *record)
{
struct score_st *r = record;
printf("%d %s %d %d\n", r->id, r->name, r->math, r->chinese);
}
int main()
{
QUEUE *qu;
struct score_st tmp;
int i, ret;
qu = queue_create(sizeof(struct score_st));
if (NULL == qu)
exit(1);
for (i = 0; i < 6; i++)
{
tmp.id = i;
snprintf(tmp.name, NAMESIZE, "stu%d", i);
tmp.math = rand() % 100;
tmp.chinese = rand() % 100;
if (0 != queue_en(qu, &tmp))
break;
}
while (1)
{
ret = queue_de(qu, &tmp);
if (-1 == ret)
break;
print_s(&tmp);
}
queue_destroy(qu);
exit(0);
}

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#include "queue.h"
QUEUE *queue_create(int size)
{
return llist_create(size);
}
int queue_en(QUEUE *ptr, const void *data)
{
llist_insert(ptr, data, LLIST_BACKWARD);
}
static int always_match(const void *p1, const void *p2)
{
return 0;
}
int queue_de(QUEUE *ptr, void *data)
{
return llist_fetch(ptr, (void *)0, always_match, data);
}
void queue_destroy(QUEUE *ptr)
{
llist_destroy(ptr);
}

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#ifndef QUEUE_H__
#define QUEUE_H__
#include "llist.h"
typedef LLIST QUEUE;
QUEUE *queue_create(int);
int queue_en(QUEUE *, const void *);
int queue_de(QUEUE *, void *);
void queue_destroy(QUEUE *);
#endif