C / C++ / MFC

void foo() {
    static int i = 0;
    i++;
    printf("%d\n", i);
}
 
void main() {
    for (int n = 0; n < 5; n++) {
        foo();
    }
}

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5

bloodwinner wrote:

again, I am still confusing...

is that
int i:
it will be ready when you start use it

static int i:
it will be ready long before you use it

So what's the use of the latter occasion? Since I don't use it, why should I care when it is created.

rxgmoral wrote:

error,

rxgmoral wrote:

LPCTSTR dll::Fun()
{
CString Rxg=_T("rxg");
LPCTSTR lpszStr=Rxg.GetBuffer();
return lpszStr;
}

rxgmoral wrote:

LPCTSTR lpszStr=Rxg.GetBuffer();

rxgmoral wrote:

error,why

rxgmoral wrote:

LPCTSTR dll::Fun()
{
CString Rxg=_T("rxg");
LPCTSTR lpszStr=Rxg.GetBuffer();
return lpszStr;
}

class custom_exception : public exception
{
public:
	custom_exception(const string& file, const string& line, const string& msg)
	{
		_Msg = file;
		_Msg += ":";
		_Msg += line;
		_Msg += "::";
		_Msg += msg;
	}

	string getMessage() const
	{
		return _Msg;
	}
private:
	string _Msg;
};

void MyFunction() throw(...)
{
	// something went wrong, need to throw
	throw custom_exception(__FILE__, __LINE__, "Something went wrong here!");
}

KKumarTG wrote:

[Message Deleted]