Help me to use the remove_copy_if() in CPP

[Tailor]

Hi, How are you. I am the student of the BSC-IT. I had learned the C++ programming language in second year of the BSC. I can know about the functions that can be in-built in the header files of the libraries of the C++ language. I must have to submit the project on the remove_copy_if() function. So, I would like to know about the remove_copy_if() function of the C++ programming language. I would like to know how can I use the remove_copy_if() function in C++ programming. Can anyone knows about the remove_copy_if() functions of C++ language.

[Praetor]

Hello, The remove_copy_if() function can be used in the C++ language to copy the given specified range after removing values of an element. The remove_copy_if() function can be the member of the <algorithm> header files. The following can be the syntax of the remove_copy_if() function in the C++ language :

template <class InptItrtr, class OtptItrtr, class Prdct>
  OtptItrtr remove_copy_if ( InptItrtr fst, InptItrtr lst,
                                  OtptItrtr rslt, Prdct prd );

[Katty]

The following program can demonstrates you that how to use the remove_copy_if() function in the programming of the C++ language while doing the coding using the remove_copy_if() function as shown below :

#include <iostream>
#include <algorshm>
#include <vector>
using namespace std;
bool IOd (int i)
{
 return ((i%2)==1); 
}
int main ()
 {
  int mint[] = {1,2,3,4,5,6,7,8,9};          
  vector<int> mvctr (9);
  vector<int>::serator s;
  remove_copy_if (mint,mint+9,mvctr.begin(),IOd);
  cout << "mvctr contains:";
  for (s=mvctr.begin(); s!=mvctr.end(); ++s)
    cout << " " << *s;
  cout << endl;
  return 0;
}

The Output of the above program as :

mvctr contains: 2 4 6 8 0 0 0 0 0

[kelfro]

Hello, Everybody. According to me the remove_copy_if() function can be used in the C++ language to remove the consecutive duplications that can be available in the range. The behavior of the remove_copy_if() function template can be similar to the following as :

template <class InptItrtr, class OtptItrtr, class Prdct>
  OtptItrtr remove_copy_if ( InptItrtr fst, InptItrtr lst,
                                  OtptItrtr rslt, Prdct prd )
{
  for ( ; fst != lst; ++fst)
    if (!prd(*fst)) *rslt++ = *fst;
  return rslt;
}

[Zecho]

The remove_copy_if() function of the C++ language can copies the given specified range of an elements [start,end) to the result, excluding the any elements for which the predicate function can returns true value. The return value of remove_copy_if() can be an iterator the end of the newer range. The remove_copy_if() function can runs in the linear time. I hope you should understood.

[Reegan]

The code of lines that can be listed below can an illustrates you about that how could you be able to use the remove_copy_if() function in the C++ programming language :

class Evenval 
{
public:
bool oprtr() (float val)
 {
return (int)val %2 ? false : true;
}
};
float func1(vector<float>& a, float max ) 
{
vector<float> b;
vector<float>::itrtr itr = remove_copy_if (a.begin(), a.end(),
backinsrtr(b), Evenval() );
return 0.0;
}