我不知道为什么当我尝试访问函数外部的all_tracks_ptr[1].tracks[1].tracks_title
时出现分段错误。这只是我整个代码的一小部分。我该如何解决?或者什么是将我从文件扫描到主文件的信息更好的方法?为什么这不能在函数之外访问?
album *pharse_album(FILE *album_file,int *number_of_albums){
int number_of_album,number_of_tracks,number_of_charaters;
int i,j;
char dummy_space;
fscanf(album_file,"%d", &number_of_album);
*number_of_albums = number_of_album;
album *all_albums_p = (album *)malloc(sizeof(album)*number_of_album);
for(j=0;j<number_of_album;j++){
fscanf(album_file,"%d", &all_albums_p[j].num_tracks);
tracks *all_tracks_p = (tracks*)malloc(sizeof(tracks)*all_albums_p[j].num_tracks);
for(i=0;i<all_albums_p[j].num_tracks;i++){
fscanf(album_file,"%d", &number_of_charaters);
all_albums_p[j].tracks = (tracks *)malloc(sizeof(tracks)*all_albums_p[j].num_tracks);
all_albums_p[j].tracks[i].tracks_title = (char *)malloc(sizeof(char)*(number_of_charaters+6));
fscanf(album_file," ",dummy_space);
fscanf(album_file, "%[^\n]s", all_albums_p[j].tracks[i].tracks_title);
printf("%s\n",all_albums_p[j].tracks[i].tracks_title);
}
}
return all_albums_p;
}
main(){
all_tracks_ptr = pharse_album(album_file,number_of_albums);
for(i=0; i < *number_of_albums ;i++){
printf("%d : %d\n",i,all_tracks_ptr[i].num_tracks);
printf("%s",all_tracks_ptr[1].tracks[1].tracks_title);
}
}
你不会告诉我们all_tracks_ptr被分配的位置 – dldnh 2012-03-31 21:43:55
事实上,如果'main'的代码是准确的,它就不会被分配。 OP,请发布尽可能最小的代码片段,这些代码在运行时演示您的问题 - 也就是说,请提供您的问题的完整示例,然后删除代码中不需要的所有代码以演示问题。 (事实上,在这样做的时候,你可能会自己发现错误,这是一种有用的技术)。 – 2012-03-31 21:47:26
刚刚添加了all_track_ptr分配的部分。 – 2012-03-31 21:48:39