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

1. C++
2. STL Algorithms Non modifying sequence operations
3. count

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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