about array initialization

[leejwen]

If I have an definition as below,

TCHAR szANset[256][20];

then, I wanna initialize part of it LIKE these (from 1-9, a-z),
szANset['1'][] = {'`', '2', '\t', 'q', '\0'};
szANset['2'][] = {'1', '3', 'q', 'w', '\0'};
szANset['3'][] = {'2', '4', 'w', 'e', '\0'};
...

obviously, above is not working. but how I can program in a similiar way. Many thanks, guys.

[Banfa]

szANset['1'][] = {'`', '2', '\t', 'q', '\0'};
szANset['2'][] = {'1', '3', 'q', 'w', '\0'};
szANset['3'][] = {'2', '4', 'w', 'e', '\0'};

Arrays are indexed from 0 not from 1 (or 49 which is the value of the character '1'). You have to initialise the whole array or none and the initialisation is part of the definition not a separate thing.

Taking all this into consideration you need to write

TCHAR szANset[256][20] = {
    {'`', '2', '\t', 'q', '\0'},
    {'1', '3', 'q', 'w', '\0'},
    {'2', '4', 'w', 'e', '\0'}};
 

Which would initialise indexes 0, 1 and 2. The rest of the array would be set to 0. However these appear to be strings in which case you can do it this way too

TCHAR szANset[256][20] = {
    {"`2\tq"},
    {"13qw"},
    {"24we"}};
 

Some compilers will give you a warning if you do not provide enough initialisers for an array.

[JosAH]

Arrays are indexed from 0 not from 1 (or 49 which is the value of the character '1'). You have to initialise the whole array or none and the initialisation is part of the definition not a separate thing.

That is not true anymore, starting from C99 you can use initialization designators as in

int a[] = { 1, 2, [4]= 3, 4 };
 

This results in an array with elements 1, 2, 0, 0, 3, 4. The designator ['1'] would
be perfectly valid.

kind regards,

Jos

ps. gcc accepts quite a few other syntaxes for this as well.

[leejwen]

Sorry, I didnt explain it clearly. About '1', I do mean it. Then, is this the only way I can do?

sprintf(szANset['1'], "%-s", "`2\tq");
...

[JosAH]

Sorry, I didnt explain it clearly. About '1', I do mean it. Then, is this the only way I can do?

sprintf(szANset['1'], "%-s", "`2\tq");
...

Read my reply #3 again; doesn't it work?

kind regards,

Jos

[weaknessforcats]

TCHAR szANset[256][20];

then, I wanna initialize part of it LIKE these (from 1-9, a-z),
szANset['1'][] = {'`', '2', '\t', 'q', '\0'};
szANset['2'][] = {'1', '3', 'q', 'w', '\0'};
szANset['3'][] = {'2', '4', 'w', 'e', '\0'};

You can use TCHAR and then use char. Stuff like '2' is not valid when UNICODE is set. You would need a whar_t equivalant of '2'.

You need to use the TCHAR macros instead:

TCHAR szANset[256][20];
 
 
szANset[_T(1)][] = TEXT(",2'\tq");
szANset[_T(2)][] = TEXT("13qw");
szANset[_T(3)][] = TEXT("24we");
 

[leejwen]

szANset[_T(1)][] = TEXT(",2'\tq");
above doesnt work properly. But I've used _tcscpy_s instead. Many thanks