Vectors and Arrays

Vector Parameters and Return Values (Return Values)

A function can return a vector.

Here is a function that collects all values that fall within a certain range.

vector<double> between(vector<double> v, 
   double low, double high)
{
   vector<double> result;
   for (int i = 0; i < v.size(); i++)
      if (low <= v[i] && v[i] <= high)
         result.push_back(v[i]);
   return result;
}

Here is a function that collects the positions of all matching values in a vector of integers.

vector<int> find_all_between(vector<double> v,
   double low, double high)
{
   vector<int> pos;
   for (int i = 0; i < v.size(); i++)
   {
      if (low <= v[i] && v[i] <= high)
         pos.push_back(i);
   }
   return pos;
}

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