Local variable in plugin

How to initialize a local variable in plugin?

Say I want to have something like this in c for my plugin.

int myfunction (){
   int* temp;

   for(int i=0; i< 4; i++){
   temp[i] = i;
   }
}

I use
self var: #temp type: 'int *temp'.  
for
int* temp

1 to: 3 do:[:i|
   temp at:i  put: i].
for the loop.

It seems like I need to initialize temp or something.

Thanks.

It looks reasonable. Just ask vmmaker to compile the code and then look at the C output.
Aik-Siong Koh

Ang Beepeng wrote

How to initialize a local variable in plugin?

Say I want to have something like this in c for my plugin.

int myfunction (){
   int* temp;

   for(int i=0; i< 4; i++){
   temp[i] = i;
   }
}

I use
self var: #temp type: 'int *temp'.  
for
int* temp

1 to: 3 do:[:i|
   temp at:i  put: i].
for the loop.

It seems like I need to initialize temp or something.

Thanks.

On 02.11.2008, at 23:06, Ang Beepeng wrote:

Shouldn't this be

     self var: #temp type: 'int *'.

? Have a look at the generated C code.

- Bert -

On Sun, Nov 02, 2008 at 07:34:18PM -0800, Ang Beepeng wrote:
Well, you would not want to do that in C, because your temp
variable is not pointing to any allocated memory. In this case
you would want to declare it is "int temp[4]".

To write it in Smalltalk, you could write this:

myFunction
    | temp i |
    self var: #temp declareC: 'int temp[4]'.
    i := 0.
    [i < 4] whileTrue:
            [temp at: i put: i.
            i := i + 1]

Which will be translated to C:

static sqInt myFunction(void) {
    sqInt i;
    int temp[4];
    i = 0;
    while (i < 4) {
        temp[i] = i;
        i += 1;
    }
}