我正在阅读一个存储我必须稍后绘制的信息的文件。当我读取文件时,我可以收集我需要的信息(使用printf
只是为了验证值是否存储在正确的位置)但我似乎无法离开循环。
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");
}
我使用以下方法调用此函数:
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);
}
没有任何编译错误/警告但是当我运行程序时,我得到了这个:
Inside fgets loop
Inside line loop
Inside gold
Inside fgets loop
Inside fgets loop
Segmentation fault (core dumped)
答案 0 :(得分:2)
只有在无法读取字符时,fgets()才会返回NULL。
您需要做的是检查feof(文件)。读完文件后,EOF位设置为1,feof()返回true;