diff --git a/activations.o b/activations.o
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diff --git a/main.o b/main.o
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index 0000000..d00254d
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diff --git a/myprogram b/myprogram
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diff --git a/network.o b/network.o
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diff --git a/neurons.o b/neurons.o
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diff --git a/preprocessing.c b/preprocessing.c
index 7201016..1faf0e7 100644
--- a/preprocessing.c
+++ b/preprocessing.c
@@ -149,6 +149,18 @@ Data *csv_to_samples(char *path_to_csv, int n_features, char *features_separator
             }
             add_sample_to_data(data, current_sample);
         }
+        Sample *current_sample = data->first_sample;
+        int number_of_train_samples = ((float)data->size*train_percent) / 100.0; //calculate number of training samples based on provided percentage
+        while(number_of_train_samples > 0)
+        {
+            current_sample = current_sample->next_sample;
+            number_of_train_samples--;
+        }
+        while(current_sample != NULL)
+        {
+            current_sample->t = TEST;
+            current_sample = current_sample->next_sample;
+        }
         fclose(file);
     }else
     {
@@ -187,7 +199,7 @@ void print_data(const Data *data)
                 temp_feature = temp_feature->next_feature;
             }
             temp_hotlabel = current_sample->first_hot;
-            printf("##> ");
+            printf(">##> ");
             while(temp_hotlabel != NULL)
             {
                 printf("%f ", temp_hotlabel->value);
diff --git a/preprocessing.o b/preprocessing.o
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diff --git a/randomness.o b/randomness.o
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diff --git a/training.o b/training.o
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