Xcode 中的分段错误，调试器无法帮助我
我一直在疯狂地试图找出哪里做错了。我承认我对C缺乏经验，但我不知道哪里出了问题。我访问/使用结构的方式是否不正确？
编辑：我不断在调试器中获得 EXC_BAD_ACCESS 。
#include <stdio.h>
#include <string.h>
#define MAX_STRING 20
#define MAX_PLYR 16
typedef struct {
char pname[MAX_STRING];
int runs;
char *s;
} Team_t;
int
main(void)
{
Team_t *team_data[MAX_PLYR];
int i;
char *p;
char name[MAX_STRING];
FILE *inp;
inp = fopen("teamnames.rtf", "r");
for (i = 0; i < MAX_PLYR;) {
while ((fgets(name, MAX_STRING, inp) != NULL));
printf("Name(i): %s\n", name);
strcpy(team_data[i]->pname, name);
i++;
}
fclose(inp);
return(0);
}
编辑：这是更改的内容，仍然出现分段错误
#include <stdio.h>
#include <string.h>
#define MAX_STRING 20
#define MAX_PLYR 16
typedef struct {
char pname[MAX_STRING];
int runs;
char s;
} Team_t;
int
main(void)
{
Team_t team_data[MAX_PLYR];
char name[MAX_STRING];
int i;
FILE *inp;
inp = fopen("teamnames.rtf", "r");
for (i = 0; i < MAX_PLYR; i++) {
((fgets(name, MAX_STRING, inp)));
if (feof(inp)) {
printf("End of stream\n");
i = MAX_PLYR;
}
else {
if (ferror(inp)) {
printf("Error reading from file\n");
}
printf("Name(i): %s\n", name);
strcpy(team_data[i].pname, name);
}
}
fclose(inp);
return(0);
}
I have been going crazy trying to figure out what is done wrong. I admit I am inexperienced when it comes to C, but I don't know what is wrong. Is the way that I am accessing/using the struct incorrect?
EDIT: I keep getting EXC_BAD_ACCESS in debugger.
#include <stdio.h>
#include <string.h>
#define MAX_STRING 20
#define MAX_PLYR 16
typedef struct {
char pname[MAX_STRING];
int runs;
char *s;
} Team_t;
int
main(void)
{
Team_t *team_data[MAX_PLYR];
int i;
char *p;
char name[MAX_STRING];
FILE *inp;
inp = fopen("teamnames.rtf", "r");
for (i = 0; i < MAX_PLYR;) {
while ((fgets(name, MAX_STRING, inp) != NULL));
printf("Name(i): %s\n", name);
strcpy(team_data[i]->pname, name);
i++;
}
fclose(inp);
return(0);
}
Edit: Here's what's changed, still getting Segmentation Error
#include <stdio.h>
#include <string.h>
#define MAX_STRING 20
#define MAX_PLYR 16
typedef struct {
char pname[MAX_STRING];
int runs;
char s;
} Team_t;
int
main(void)
{
Team_t team_data[MAX_PLYR];
char name[MAX_STRING];
int i;
FILE *inp;
inp = fopen("teamnames.rtf", "r");
for (i = 0; i < MAX_PLYR; i++) {
((fgets(name, MAX_STRING, inp)));
if (feof(inp)) {
printf("End of stream\n");
i = MAX_PLYR;
}
else {
if (ferror(inp)) {
printf("Error reading from file\n");
}
printf("Name(i): %s\n", name);
strcpy(team_data[i].pname, name);
}
}
fclose(inp);
return(0);
}
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评论（3）
您声明了 team_data 但没有分配它；因此它指向随机内存，数组的虚内容也是如此。您需要实际创建数组，例如
Team_t *team_data[MAX_PLYR] = (Team_t**) malloc(MAX_PLYR * sizeof(Team_t *));
You declare
team_databut you don't allocate it; therefore it's pointing off into random memory, as are the imaginary contents of the array. You need to actually create the array, something likeTeam_t *team_data[MAX_PLYR] = (Team_t**) malloc(MAX_PLYR * sizeof(Team_t *));
使用结构，而不是指针（或者如果您坚持使用指针，请为这些结构分配空间）
Use structs, not pointers (or if you insist using pointers the allocate space for those structs)
当您编写时，
您没有为实际的 Team_t 记录分配任何内存，而是设置一个指向记录的指针数组。
相反，如果您写的话，
您就会分配记录。当您想复制到 team_data 数组时，您可以改为编写
when you write
you are not allocating any memory for the actual Team_t records, instead you are setting up an array of pointers to records.
If instead you would write
you would have allocated the records. When you then want to copy into the team_data array you write instead