带菜单的，适合课设用。printf("\n||===============目录============||\n");printf("添加信息......1\n");printf("查看所有.......2\n");printf("查找车辆.......3\n");printf("删除车辆.......4\n");printf("替换车辆.......5\n");printf("删除所有.......6\n");printf("请选择1?2?3