Ways to Search and delete a value from an array of objects?

[munitjsr2]

#include <iostream>
    #include <vector>
    #include <algorithm>

    using namespace std;

    class A
    {
          public :
          void getData(vector< A > &);
          void putData(vector< A > &);
      
          private :
                  int x;
                  char name[90];
    };
    vector< A > v;

    void A :: getData(vector< A > &Aref)
    {
         cout << "id = ";
         cin >> x;
         cout << "\nname = ";
         cin >> name;
 
    }

    void A :: putData(vector< A > &Aref)
    {
         cout << "size of vector is " << Aref.size()  << endl;
         for(int i=0; i < Aref.size(); i++)
         cout << Aref[i].x << " : " << Aref[i].name << endl;
         
         cin.ignore(numeric_limits< streamsize >::max(), '\n'); 
         cin.get();
    }
     

    int main()
    {
        for(int i=0; i < 3; i++)
        {
        v.push_back(A());
        v[0].getData(v);
        v[0].putData(v);
        }
        vector< A >::iterator beg = v.begin(), en = v.end();
        //v.erase( find(beg, en, v[1]) ); -->DOESN'T WORK
        return 0;   
    }

I have used this
v.erase( find(beg, en, v[1]) ); (Line 48)
to search and delete an object from the array
vector< A > v; (A is the name of class)

Does find accepts the object as its 3rd if not what ways can a follow to delete an object.In fact I want to search the particular attribute(such as id, name) value from the array of objects and then delete that object.

please advice?

[Mr. K]

Did you find any error?

[munitjsr2]

Did you find any error?

well a new tab opened when i compiled it.( stl_algo.h opened) and

got many lines of error i don't understand

C:\Dev-Cpp\include\c++\3.4.2\bits\stl_algo.h In function `_RandomAccessIterator std::find(_RandomAccessIterator, _RandomAccessIterator, const _Tp&, std::random_access_iterator_tag) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<A*, std::vector<A, std::allocator<A> > >, _Tp = A]':

314 C:\Dev-Cpp\include\c++\3.4.2\bits\stl_algo.h instantiated from `_InputIterator std::find(_InputIterator, _InputIterator, const _Tp&) [with _InputIterator = __gnu_cxx::__normal_iterator<A*, std::vector<A, std::allocator<A> > >, _Tp = A]'

and many more lines, I dont get it
compiler (DevC++ version 4.9.9.0)

[Insensus]

If you look at this page http://www.cplusplus.com/reference/algorithm/find/ you'll see that find() requires the == operator to be defined on your class, and it's not.

Something like this probably:

bool A :: operator ==(const A &t) const
{
	return ((x == t.x) && (strcmp(name, t.name) == 0));
}

On a side note, why did you define putData() as a member-function of A even though it doesn't do anything with the A it's called from?

And why does getData() take an argument which it doesn't use?

[munitjsr2]

If you look at this page http://www.cplusplus.com/reference/algorithm/find/ you'll see that find() requires the == operator to be defined on your class, and it's not.

Something like this probably:

bool A :: operator ==(const A &t) const
{
	return ((x == t.x) && (strcmp(name, t.name) == 0));
}

On a side note, why did you define putData() as a member-function of A even though it doesn't do anything with the A it's called from?

And why does getData() take an argument which it doesn't use?

Thanks, I got this