【发布时间】：2020-06-09 11:03:15
【问题描述】：
我正在尝试编写一个使用链表和文件的代码，以维护文本文件中给出的操作（函数），而不是从用户那里接收它们。
由于某种原因，我遇到了一个错误，上面写着：
"严重性代码描述项目文件行抑制状态 错误 C2040 'rename': 'hw_component *(char *,char *,hw_component *)' 与 'int (const char *,const char *)' 的间接级别不同 EX5_313410961 c:\users \edave\source\repos\ex5_313410961\ex5_313410961\shahar_connection.c 172"
我无法理解问题是实际函数rename() 还是因为actions() 函数。
代码很长，所以只发布相关部分。
#define _CRT_SECURE_NO_WARNINGS
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#define NAME_LENGTH 200
typedef struct hw_component
{
char name[NAME_LENGTH];
int copies;
struct hw_component *next;
}hw_component;
hw_component *create_component(char* name,int copies)
{
if (name != NULL && strlen(name) > NAME_LENGTH)
return NULL;
hw_component *comp = (hw_component*)malloc(sizeof(hw_component));
if (comp == NULL)
{
printf("Error: memory allocation failed\n");
return NULL;
}
strcpy(comp->name, name);
comp->copies = copies;
comp->next = NULL;
return comp;
}
hw_component *add_sort(hw_component* head, int copies, char *name)
{
hw_component *iter, *prev = NULL;
hw_component *new_comp = create_component(name, copies);
if (head == NULL)
return new_comp;
if (strcmp(new_comp->name, head->name) < 0)
{
new_comp->next = head;
return new_comp;
}
iter = head;
while (iter != NULL && strcmp(iter->name, new_comp->name) < 0)
{
prev = iter;
iter = iter->next;
}
prev->next = new_comp;
new_comp->next = iter;
return head;
}
hw_component *initialize(char *argv[])
{
hw_component *list_of_comp = NULL;
FILE *fp = NULL;
char dolar[2] = "$";
fp = fopen(argv[1],"r");
if (fp == NULL)
{
printf("Error: opening %s failed\n", argv[1]);
exit(1);
}
while (!feof(fp))
{
char str[400], *token, *str_num;
fgets(str, 400, fp);
int numb;
token = strtok(str,dolar);
str_num = strtok(NULL, dolar);
numb = atoi(str_num);
list_of_comp=add_sort(list_of_comp, numb, token);
}
fclose(fp);
return list_of_comp;
}
void finalize(hw_component *head, char *argv[])
{
hw_component *temp;
FILE *fp = NULL;
int temp_num;
char *str,*num_str;
fp = fopen(argv[3], "w");
if (fp==NULL)
{
printf("Error: opening %s failed\n", argv[3]);
while (head!=NULL)
{
temp = head;
head = head->next;
free(temp);
}
}
while (head!=NULL)
{
temp = head;
fprintf(fp,"%s $$$ %d\n",temp->name,temp->copies);
head = temp->next;
free(temp);
}
fclose(fp);
}
hw_component *remove_comp_by_name(hw_component *head_comp, char comp_name[NAME_LENGTH + 1])
{
hw_component *temp_ptr = head_comp;
hw_component *prev_ptr;
hw_component *zero_copies_check = head_comp;
if (head_comp == NULL)
{
return head_comp;
}
if (strcmp(temp_ptr->name, comp_name) == 0)
{
head_comp = head_comp->next;
free(temp_ptr);
return head_comp;
}
while (temp_ptr != NULL && strcmp(temp_ptr->name, comp_name) != 0)
{
prev_ptr = temp_ptr;
temp_ptr = temp_ptr->next;
}
if (temp_ptr != NULL)
{
prev_ptr->next = temp_ptr->next;
free(temp_ptr);
}
while (zero_copies_check != NULL)
{
if (zero_copies_check->copies == 0)
{
free(zero_copies_check);
}
zero_copies_check = zero_copies_check->next;
}
return head_comp;
}
hw_component *rename(char old_name[NAME_LENGTH], char new_name[NAME_LENGTH], hw_component *head_comp)
{
hw_component *temp_comp = head_comp;
int num_of_copies = 0;
if (head_comp == NULL)
{
return head_comp;
}
while (temp_comp != NULL && strcmp(temp_comp->name, old_name) != 0)
{
temp_comp = temp_comp->next;
}
num_of_copies = temp_comp->copies;
head_comp=remove_comp_by_name(head_comp, old_name);
head_comp=add_sort(head_comp, num_of_copies, new_name);
return head_comp;
}
hw_component *return_comp(hw_component *head, char name_of_comp[], int copies)
{
hw_component *temp_comp = head;
if (head == NULL)
{
return head;
}
while (temp_comp != NULL && strcmp(temp_comp->name, name_of_comp) != 0)
{
temp_comp = temp_comp->next;
}
if (temp_comp != NULL)
{
temp_comp->copies += copies;
}
else
{
add_sort(head, name_of_comp, copies);
}
return head;
}
int choose_act(char *str)
{
char init[12] = "Initialize ", rename[8]="Rename ",fire[6]="Fire ";
char retu[24] = "Returned_from_customer ", prod[12]="Production " ,fatal[19]="Fatal_malfunction ";
char finalize[] = "Finalize";
if (strcmp(str,init)==0)
return 1;
if (strcmp(str, rename)==0)
return 2;
if (strcmp(str, retu)==0 || strcmp(str, prod)==0)
return 3;
if (strcmp(str, fire)==0 || strcmp(str, fatal)==0)
return 4;
if (strcmp(str, finalize)==0)
return 5;
}
void actions(char *argv[])
{
char dolar[2] = "$";
hw_component *head;
FILE *fp = NULL;
char str[400], *token, *name, *old_name;
int choise = 0, numb;
fp = fopen(argv[2], "r");
if (fp == NULL)
{
printf("Error: opening %s failed\n", argv[2]);
exit(1);
}
while (!feof(fp))
{
fgets(str, 400, fp);
token = strtok(str,dolar);
choise = choose_act(token);
head = initialize(argv);
switch (choise)
{
case 1:
break;
case 2:
old_name = strtok(str, dolar);
name = strtok(str, dolar);
printf("%s %s", old_name, name);
head=rename(old_name,name,head);
break;
case 3:
name = strtok(str, dolar);
numb = atoi(strtok(str, dolar));
head=return_comp(head, name, numb);
break;
case 4:
name = strtok(str, dolar);
numb = atoi(strtok(str, dolar));
head=fatal_maf(head, name, numb);
break;
case 5:
finalize(head,argv);
break;
default:
break;
}
}
}
int check_argc(int argc)
{
int numb = argc;
if (argc != 3)
{
printf("Error: invalid number of arguments (<%d> instead of 3)\n", numb);
return 0;
}
return 1;
}
int main(int argc, char *argv[])
{
int res = 0;
res=check_argc(argc);
if (res == 1)
actions(argv);
return 0;
}
【问题讨论】：
标签： c