In sample1_convnet, when i try to use
std::vector<vec_t> result = nn.test(test_images);
It seems that the result is not correct, it is not the same as nn.test(test_images, test_labels).

The value of "max_index(result[i])" is not same as "nn.fprop_max_index(test_images[i])" .

I compared the result using this code:
for (int i = 0; i < 10; i++){
cout << test_labels[i] << " vs " << max_index(result[i]) << " vs " << nn.fprop_max_index(test_images[i]) << endl;
for (int k = 0; k < result[i].size(); k++){
cout << result[i][k] << ",";
}
cout << endl;
}