char * ReadSpeacialLine(char *filename, int whichLine){FILE *fp; int currentLine = 0;//当前读取的行char strLine[1024];//每行最大读取的字符数,可根据实际情况扩大if ((fp = fopen(filename, "r")) == NULL) //判断文件是否存在及可读{printf("error!");return NULL;}while...