Copy a struct to a struct array

Question

Hey guys I need some help. I'm trying to store a SCar struct into an array of Scar inside the SOwner structure, for each different SOwner, though I'm getting this error:

Incompatible types when assigning to type 'Scar' from type 'struct SCar *'

Here's some code :

typedef struct {
char name[40];
SCar cars [100];
} SOwner;

typedef struct {
char color[40];
char brand[12];
} SCar;

SOwner *ownerPTR;
SCar *carPtr

void function(){
for(i=0; i<10 ; i++){
    (ownerPtr)->cars[i] = (carPtr+i);   // Problem here <<<--
}

Is there any simple way to make this work out? Thanks

In general, if code isn't working, pare it down to the simplest example that doesn't work, which in this case would be something like int n; int *p; n=p;. — Beta
– Beta, Commented Nov 10, 2014 at 15:40

unwind · Accepted Answer · 2014-11-10 15:37:18Z

3

You must dereference the pointer on the right hand side to generate a value of type SCar.

Like so:

ownerPtr->cars[i] = carPtr[i];

or

ownerPtr->cars[i] = *(carPtr + i);

But the latter is just a more complicated way to write the former, so just use indexing.

answered Nov 10, 2014 at 15:37

unwind

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Comments

Peter Li · Accepted Answer · 2014-11-10 15:37:40Z

0

you have to define an array of pointers

typedef struct {
    char name[40];
    SCar * cars [100];
} SOwner;

answered Nov 10, 2014 at 15:37

Peter Li

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1 Comment

jweyrich Over a year ago

It's not necessary to touch the struct definition unless OP wants to avoid the implicit copying of SCars.

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