我注意到有两种方法可以返回文件开头 FILE *fp = fopen("test.bin", "r") fseek(fp, 0, SEEK_END); rewind(fp); 并且。FILE *fp = fopen("test.bin", "r") fseek(fp, 0, SEEK_END); fseek(fp, 0, SEEK_SET); 这些方法之间有什么区别(如果有的话)?