sorry, comp is either comp_x or comp_y
On Wed, Aug 10, 2011 at 6:24 PM, Nitin Nizhawan <nitin.nizha...@gmail.com>wrote:
> what is "comp" in your code?
>
>
> On Wed, Aug 10, 2011 at 6:19 PM, aanchal goyal
> <goyal.aanch...@gmail.com>wrote:
>
>> I have a vector of stuct, how to sort this vector?
>> problem is I can't overload the '<' operator in struct definition, as i
>> want to sort by 'x' one time, and then by 'y'. I tried to write the
>> comparator function separatley but its no working. How to do it?
>>
>> #include<iostream>
>> #include<algorithm>
>> #include<vector>
>>
>> using namespace std;
>>
>>
>> typedef struct
>> {
>> int x;
>> int y;
>> }point;
>>
>> struct comp_x
>> {
>> bool operator()(point &a, point &b)
>> return a.x<b.x;
>> }
>>
>> struct comp_y
>> {
>> bool operator()(point &a, point &b)
>> return a.y<b.y;
>> }
>>
>> int main()
>> {
>> vector<point> vc;
>> int n;
>> cin>>n;
>> point a;
>>
>> for(int i=0;i<n;i++)
>> {
>> cin>>a.x;
>> cin>>a.y;
>> vc.push_back(a);
>> }
>> cout<<endl;
>> sort(vc.begin(), vc.end(), comp);
>>
>> for(int i=0;i<n;i++)
>> {
>> cout<<vc[i].x<<" "<<vc[i].y<<endl;
>> }
>>
>> system("pause");
>> return 0;
>> }
>>
>>
>> --
>> Regards,*
>> Aanchal Goyal*.
>>
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>
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--
Regards,*
Aanchal Goyal*.
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