qsort error ??

Hi
qsort function returns an error.
The problem is this:

1>main.cpp(4121): error C2664: 'qsort' : cannot convert parameter from 'std::_Vector_iterator<_Myvec>' to 'void *'



Is there any way to fix this ?

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
	class Record{
	//int count;
	int price;
	public:
		Record(int price1):price(price1){}

		friend bool operator>(const Record &r1, const Record &r2);
		friend ostream &operator<<(ostream &os,  const Record &r);

	};
	bool operator >(const Record &r1, const Record &r2)
	{
		if (r1.price > r2.price)
			return true;
		else
			return false;

	}

	ostream &operator<<(ostream &os,  const Record &r)
	{

		return os << "(" << r.price << ")" << endl;
	}


	

	
	int cmp(Record &r1, Record &r2)
	{
		if (r1 > r2)
			return 1;
		return 0;
	}



template<class Iter, class functor>
void sorts(Iter beg, Iter end, functor f)
{  
	int size = end - beg;

		for (int k = 0; k < size -1; k++){
			for (int i = 0; i < size -1 -k; i++)
				if (f(beg[i], beg[i + 1]))
					swap(beg[i],beg[i + 1]);
		}
}

int main()
{


	vector<Record> rvec;
	rvec.push_back(Record(144));
	rvec.push_back(Record(45));
	rvec.push_back(Record(12));
	rvec.push_back(Record(54));
	rvec.push_back(Record(90));
	rvec.push_back(Record(43));
	rvec.push_back(Record(112));
	rvec.push_back(Record(1));




	for (vector<Record>::iterator iter2 = rvec.begin(); iter2 != rvec.end(); iter2++)
	cout << *iter2 << endl;

	

	


	qsort(rvec, rvec.size(), sizeof(rvec), &cmp);	




for (vector<Record>::iterator iter2 = rvec.begin(); iter2 != rvec.end(); iter2++)
	cout << *iter2 << endl;


	
	return 0;
}
std::sort( rvec.begin(), r.end() );

I'm not sure if vector::data is standard to get a pointer where the the array is allocated.
&rvec[0] It is not safe.

Also
1
2
//qsort(rvec, rvec.size(), sizeof(rvec), &cmp);
qsort(rvec, rvec.size(), sizeof(Record), &cmp);
thanks...
Topic archived. No new replies allowed.