const char to char

[Muffins 1]

Hello,

what is wrong with this code ?

PyObject * cfgGet(PyObject* poSelf, PyObject* poArgs)
{
	unsigned char bType;
	if (!PyTuple_GetByte(poArgs, 0, &bType))
		return Py_BuildException();

	char* szKey;
	if (!PyTuple_GetString(poArgs, 1, &szKey))
		return Py_BuildException();

	char* szDefault;
	if (!PyTuple_GetString(poArgs, 2, &szDefault))
		szDefault = "";

	return Py_BuildValue("s", CPythonConfig::Instance().GetString((CPythonConfig::EClassTypes) bType, szKey, szDefault).c_str());
}

 

i keep getting this error:

'=': cannot convert from 'const char [1]' to 'char *' 

because of this line here:

szDefault = "";

 

[TheEqualizer 117]

The error you are getting is self-explanatory.

String literals are constant, and you are trying to assign a pointer to a string literal to a pointer to non const which is not valid (because this would allow you to violate the const attribute of the string literal).

[Kuqsal 241]

Try to 

szDefault = '';

[Muffins 1]

3 hours ago, Kuqsal said:

Try to 

szDefault = '';

i did it like that at first i left it empty i got an error to not leave it empty:

 

	char* szDefault;
	if (!PyTuple_GetString(poArgs, 2, &szDefault))
		szDefault = '0';

but i got a new error now:

a value of type "char" cannot be assigned to an entity of type "char *"

Edited November 4, 2024 by Muffins

[TheEqualizer 117]

@Muffins character literals are value types, so it can't be assigned to a pointer variable.

Just think a little bit, this is basic C++.

[Kuqsal 241]

1 hour ago, Muffins said:

i did it like that at first i left it empty i got an error to not leave it empty:

 

	char* szDefault;
	if (!PyTuple_GetString(poArgs, 2, &szDefault))
		szDefault = '0';

but i got a new error now:

a value of type "char" cannot be assigned to an entity of type "char *"

Can you try szDefault ='\n';

1 hour ago, Muffins said:

ilk başta boş bıraktım gibi yaptım boş bırakmamak için bir hata aldım:

 

ama şimdi yeni bir hatam var:

Try to this
szDefault ='\n\;
or
szDefault =NULL;