CODEWITHSUNDEEP
cfunctiondefault-value
J V
J V

Reputation: 11936

This function declaration is throwing an error: expected ‘;’, ‘,’ or ‘)’ before ‘=’ token

#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
static xmlDocPtr importSettings(char file[]="CsSettings.xml"){}

That's not so complicated, why does it always throw this error?

test.c:3: error: expected ‘;’, ‘,’ or ‘)’ before ‘=’ token

Am I compiling it wrong?

Upvotes: 1

Views: 1520

Answers (2)

JSBձոգչ
JSBձոգչ

Reputation: 41388

C doesn't have default parameter values. You need to compile your file as C++.

Edit:

So you don't want to use C++. (Good, because I don't want to use C++, either.) Here's one reasonable way to do the same thing:

static xmlDocPtr importSettings(char file*)
{
    if (file == NULL)
    {
        file = "CsSettings.xml";
    }
    /* etc. */
}

This way, if you want to use the default, just pass NULL to the import settings.

Another option is to add #define DEFAULT_XML_FILE "CsSettings.xml" somewhere in your header, and then require callers to pass DEFAULT_XML_FILE if they want to use the default.

Upvotes: 6

T.J. Crowder
T.J. Crowder

Reputation: 1075209

C doesn't have default values on arguments. C++ has them, though.

Upvotes: 4

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