Illustrating the generic generate algorithm: Fill vector1 with 1, 4, 9, 16, ..., 100 : generate « STL Algorithms Modifying sequence operations « C++ Tutorial

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2. STL Algorithms Modifying sequence operations
3. generate

#include <iostream>
#include <cassert>
#include <algorithm>
#include <vector>
using namespace std;

template <typename T>
class calc_square {
  T i;
 public:
  calc_square(): i(0) {}
  T operator()() { ++i; return i * i; }
};

int main()
{
  vector<int> vector1(10);

  generate(vector1.begin(), vector1.end(), calc_square<int>());

  for (int j = 0; j < 10; ++j)
    cout << vector1[j] << " ";

  return 0;
}

1 4 9 16 25 36 49 64 81 100