When you create an object ofstructureorunionthe compiler may insert some extra bytes between the members of the structure or union for the alignment. These extra unused bytes are called padding bytes and this technique is called structure padding in C. The C standard does not define the value ...
// 广义表的头尾链表存储表示 typedef enum {ATOM, LIST} ElemTag; // ATOM==0:原子,LIST==1:子表 typedef struct GLNode { ElemTag tag; // 公共部分,用于区分原子结点和表结点 union { // 原子结点和表结点的联合部分 AtomType atom; // atom 是原子结点的值域,AtomType 由用户定义 struct { ...
// 广义表的头尾链表存储表示 typedef enum {ATOM, LIST} ElemTag; // ATOM==0:原子,LIST==1:子表 typedef struct GLNode { ElemTag tag; // 公共部分,用于区分原子结点和表结点 union { // 原子结点和表结点的联合部分 AtomType atom; // atom 是原子结点的值域,AtomType 由用户定义 struct { ...
typedefenum_WWAN_UICC_FILE_STRUCTURE { WwanUiccFileStructureUnknown, WwanUiccFileStructureTransparent, WwanUiccFileStructureCyclic, WwanUiccFileStructureLinear, WwanUiccFileStructureBerTLV, WwanUiccFileStructureMax } WWAN_UICC_FILE_STRUCTURE, *PWWAN_UICC_FILE_STRUCTURE; ...
Unlike structure members, which all have distinct locations in the structure, the members of a union all share the same location in memory; that is, all members of a union start at the same address. Thus you can define a union with many members, but only one member can contain a value...
typedefstruct{JET_COLUMNID columnid; JET_ERR err;union{struct{unsignedlongcEnumColumnValue; JET_ENUMCOLUMNVALUE rgEnumColumnValue; };struct{unsignedlongcbData;void* pvData; }; }; } JET_ENUMCOLUMN; Members columnid The column ID that was enumerated. ...
UNDO UNION UNIQUE UNLOCK UNSIGNED UPDATE USAGE USE USING UTC_DATE UTC_TIME UTC_TIMESTAMP VALUES VARBINARY VARCHAR VARCHARACTER VARYING WHEN WHERE WHILE WITH WRITE XOR YEAR_MONTH ZEROFILL The following are new reserved words in MySQL 6.0: OVERWRITE READ_ONLY SKIP_GAP_EVENT MySQL allows some keyw...
This structure contains a tag that represents the type of the value being passed as well as a “val” which is a union of the possible value types. For example, to pass a true boolean: tag = BOOL, val.boolean = 1. typedef enum dcgmPolicyMode_enum dcgmPolicyMode_t Enumeration for po...
packed enum 1 same as char packed enum 2 same as short packed enum 4 same as int integral type : bit(m) - same as integral type float 4 2 4 double 8 2 4/8 struct - same as most demanding member union - same as most demanding member array - same as component packed ...
// 广义表的头尾链表存储表示 typedef enum {ATOM, LIST} ElemTag; // ATOM==0:原子,LIST==1:子表 typedef struct GLNode { ElemTag tag; // 公共部分,用于区分原子结点和表结点 union { // 原子结点和表结点的联合部分 AtomType atom; // atom 是原子结点的值域,AtomType 由用户定义 struct { ...