[英]Segmentation Fault when reading File
我正在讀取一個文件,該文件存儲了以后必須繪制的信息。 讀取文件時,我可以收集所需的信息(使用printf
只是為了驗證值是否存儲在正確的位置),但似乎無法退出循環。
void getInfo(info *rooms, borderControl *doors, FILE *file)
{
char buffer[150];
char tempStorage[10];
char *temp;
char *locaOne, *locaTwo;
temp = tempStorage;
temp = malloc(sizeof(tempStorage));
while(fgets(buffer, 150, file) != NULL)
{
printf("Inside fgets loop\n");
temp = strtok_r(buffer, " ", &locaOne);
rooms->size[0] = atoi(strtok(temp, "x"));
rooms->size[1] = atoi(strtok(NULL, " "));
temp = strtok_r(NULL, " ", &locaOne);
while(temp != NULL)
{
printf("Inside line loop\n");
if (temp[0] == 'g') //gold
{
printf("Inside gold\n");
temp++;
rooms->gold[0] = atoi(strtok_r(temp, ",", &locaTwo));
rooms->gold[1] = atoi(strtok_r(NULL, " ", &locaTwo));
drawRooms(rooms, doors);
}
else if (temp[0] == 'h') //hero
{
temp++;
rooms->heroPosi[0] = atoi(strtok_r(temp, ",", &locaTwo));
rooms->heroPosi[1] = atoi(strtok_r(NULL, " ", &locaTwo));
drawRooms(rooms,doors);
}
else if (temp[0] == 's') //staris
{
temp++;
rooms->stairs[0] = atoi(strtok_r(temp, ",", &locaTwo));
rooms->stairs[1] = atoi(strtok_r(NULL, " ", &locaTwo));
drawRooms(rooms,doors);
}
else if (temp[0] == 'd') //doors
{
temp++;
rooms->door[0] = atoi(strtok_r(temp, ",", &locaTwo));
rooms->door[1] = atoi(strtok_r(NULL, " ", &locaTwo));
drawRooms(rooms,doors);
}
else if (temp[0] == 'm') //magic
{
temp++;
rooms->magic[0] = atoi(strtok_r(temp, ",", &locaTwo));
rooms->magic[1] = atoi(strtok_r(NULL, " ", &locaTwo));
drawRooms(rooms,doors);
}
else if (temp[0] == 'p') //potion
{
temp++;
rooms->magic[0] = atoi(strtok_r(temp, ",", &locaTwo));
rooms->magic[1] = atoi(strtok_r(NULL, " ", &locaTwo));
drawRooms(rooms,doors);
}
else if (temp[0] == 'w') //weapon
{
temp++;
rooms->weapon[0] = atoi(strtok_r(temp, ",", &locaTwo));
rooms->weapon[1] = atoi(strtok_r(NULL, " ", &locaTwo));
drawRooms(rooms,doors);
}
else if (temp == NULL)
{
break;
}
else
{
temp = strtok_r(NULL, " ", &locaOne);
if(temp == NULL)
{
break;
}
}
temp = strtok_r(NULL, " ", &locaOne);
}
printf("here\n");
}
我使用以下函數調用此函數:
FILE *file;
file = fopen(argv[1], "r");
if (file == NULL)
{
printf("Error! Could not open file.\n");
return 0;
}
else
{
initscr();
getInfo(rooms, doors, file);
}
沒有任何編譯錯誤/警告,但是當我運行程序時,我得到了:
Inside fgets loop
Inside line loop
Inside gold
Inside fgets loop
Inside fgets loop
Segmentation fault (core dumped)
僅當無法讀取字符時,fgets()才返回NULL。
您需要做的是檢查feof(file)。 當您完成文件的讀取后,EOF位置1,feof()返回true;否則,返回0。
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