arrays - How to initialise a complex C struct in one line? -

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i have structure:

typedef struct stock {   const char* key1p2;    // stock code   const char* key2p2;    // short desc   const char* desc1;     // description   const char* prod_grp;  // product group   const char dp_inqty;   // decimal places in quantity   const long salprc_u;   // vat excl price   const long salprc_e;   // vat includive price   const long b_each;     // quantity in stock   const long b_alloc;    // allocated qty   const char* smsgr_id;  // subgroup   const char** barcodes; // barcodes } stock_t;

and want initialise arrays of instances of structure, in 1 line of code per stock struct.

i have tried:

stock_t data_stock[] = {     { "0001", "soup",  "tomato soup",     "71", 0, 100, 120, 10, 0, "",   {"12345", "23456", null} },     { "0002", "melon", "melon , ham",   "71", 0, 200, 240, 10, 0, "",   {"34567", "45678", null} },     ...     { null,   null,    null,              null, 0,   0,   0,  0, 0, null, null         } };

but fails with:

data.c:26:74: warning: incompatible pointer types initializing 'const char **' expression of type 'char [6]'       [-wincompatible-pointer-types]   { "0001", "soup",  "tomato soup",     "71", 0, 100, 120, 10, 0, "",   {"12345", "23456", null} },                                                                          ^~~~~~~

it barcode field problematic, char**.

(that clang, gcc reports similar error, less helpfully.)

it's if compiler has ignored curly brace before "12345".

i can work around problem using:

const char *barcodes0001[] = {"12345", "23456", null};  stock_t data_stock[] = {   { "0001", "soup",  "tomato soup",     "71", 0, 100, 120, 10, 0, "",   barcodes0001 },

is cause of problem different between char [] , char *, or there more subtle. (perhaps can initialise arrays of structs, not structs of arrays.)

to avoid have declare named dummy variable can use compound literal

stock_t data_stock[] = {     { "0001", "soup",  "tomato soup",     "71", 0, 100, 120, 10, 0, "",   (const char*[]){"12345", "23456", null} },     { "0002", "melon", "melon , ham",   "71", 0, 200, 240, 10, 0, "",   (const char*[]){"34567", "45678", null} },     ...     { null,   null,    null,              null, 0,   0,   0,  0, 0, null, null         } };

this way define local temporary variable syntax of (type){ initializers } available since c99 (and clang , gcc have them).

edit: lifetime of these compound literals same variable data_stock suppose ok. in case think should mark of fields const, e.g const char*const key1p2;

also easier read if you'd use designated initializers 

{ .keyp1 = "0001", ... }

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