C++ 全局 静态结构体变量的初始化

Posted 2023-04-06

static struct ReservedInfo
const string sKey;
const TokenType iToken;
ReservedInfo[MAXRESERVED] =
"function", FUNCDEF,
"NULL", NULLVAL,
"if", IF,
"elseif", ELSEIF,
"else", ELSE,
"while", WHILE,
"break", BREAK,
"continue", CONTINUE,
"return", RETURN,
"atof", FUNCTION,
"ceil", FUNCTION,
"floor", FUNCTION,
"abs", FUNCTION,
"index", FUNCTION,
"substr", FUNCTION,
"strlen", FUNCTION,
"trim", FUNCTION,
"replace", FUNCTION,
"split", FUNCTION,
"printf", FUNCTION
;

这样定义后，编译为何报如下错误：
e:\desktop\script parser\c语言的脚本解析\formula+c%2b%2b(1)\formula c++\formula\parse.cpp(13) : error C2440: 'initializing' : cannot convert from 'char [9]' to 'struct ReservedInfo1'
No constructor could take the source type, or constructor overload resolution was ambiguous
e:\desktop\script parser\c语言的脚本解析\formula+c%2b%2b(1)\formula c++\formula\parse.cpp(13) : error C2440: 'initializing' : cannot convert from 'TokenType' to 'struct ReservedInfo1'
No constructor could take the source type, or constructor overload resolution was ambiguous
e:\desktop\script parser\c语言的脚本解析\formula+c%2b%2b(1)\formula c++\formula\parse.cpp(14) : error C2440: 'initializing' : cannot convert from 'char [5]' to 'struct ReservedInfo1'
No constructor could take the source type, or constructor overload resolution was ambiguous
e:\desktop\script parser\c语言的脚本解析\formula+c%2b%2b(1)\formula c++\formula\parse.cpp(14) : error C2440: 'initializing' : cannot convert from 'TokenType' to 'struct ReservedInfo1'
No constructor could take the source type, or constructor overload resolution was ambiguous

..........

参考技术A typedef struct ReservedInfo
const string sKey;
const TokenType iToken;
RESERVEDINFO;

static RESERVEDINFO stReservedInfo[MAXRESERVED] =
"function", FUNCDEF,
"NULL", NULLVAL,
"if", IF,
"elseif", ELSEIF,
"else", ELSE,
"while", WHILE,
"break", BREAK,
"continue", CONTINUE,
"return", RETURN,
"atof", FUNCTION,
"ceil", FUNCTION,
"floor", FUNCTION,
"abs", FUNCTION,
"index", FUNCTION,
"substr", FUNCTION,
"strlen", FUNCTION,
"trim", FUNCTION,
"replace", FUNCTION,
"split", FUNCTION,
"printf", FUNCTION
;

请问C中结构体变量为全局变量或静态变量时才能初始化么？

参考技术A 但1989年ANSI制订的第一个C标准（通常称为C89)即规定：允许局部动态的结构体变量（或数组）被初始化。
你那本书虽然在2004年才出版，却不符合C89的规定，很是遗憾！
不允许对局部动态的集合类型的对象（如结构体变量，数组）进行初始化，是担心效率太低，比较耗时，因为动态局部变量的初始化在每次进入函数时都要进行。本回答被提问者采纳