Mega Code Archive
Count true value in a vector
<![CDATA[
#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);
}
cout << "Sequence:\n";
for(i=0; i<v.size(); i++)
cout << boolalpha << v[i] << " ";
cout << endl;
i = count(v.begin(), v.end(), true);
cout << i << " elements are true.\n";
return 0;
}
/*
Sequence:
true true false false true false false false false false
3 elements are true.
*/
]]>