Use count() with vector of boolean value : count « STL Algorithms Non modifying sequence operations « C++

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Use count() with vector of boolean value

  

#include <iostream>

#include <vector>

#include <cstdlib>

#include <algorithm>

using namespace std;

   

int main()

{

  vector<bool> v;

  unsigned int i;

 

  for(i=0; i < 10; i++) {

   if(rand() % 2) 

      v.push_back(true);

   else 

      v.push_back(false);

  }

   

  for(i=0; i<v.size(); i++)

    cout << boolalpha << v[i] << endl;

   

  i = count(v.begin(), v.end(), true);

  cout << i << " elements are true.\n";

   

  return 0;

}

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