text: #ifndef _PERCEPTRON
  #define _PERCEPTRON
  
  #include "database.h"
  
  void printArray(double *array, int i);
  void printMatrix(double** matrix, int i, int j);
  int activation(double u);
  int * instancia(double *x, int i, double *w, int *bias);
  int perceptron (struct database * data, int age);
  
  #endif
  