diff --git a/src/mnist/mnist.h b/src/mnist/mnist.h
new file mode 100644
index 0000000..00cca2c
--- /dev/null
+++ b/src/mnist/mnist.h
@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#ifndef DEF_MNIST_H
+#define DEF_MNIST_H
+
+uint32_t swap_endian(uint32_t val);
+int** read_image(unsigned int width, unsigned int height, FILE* ptr);
+int* read_mnist_images_parameters(char* filename);
+int*** read_mnist_images(char* filename);
+unsigned int* read_mnist_labels(char* filename);
+
+#endif
\ No newline at end of file
diff --git a/src/mnist/neural_network.c b/src/mnist/neural_network.c
index 6503a76..2887b19 100644
--- a/src/mnist/neural_network.c
+++ b/src/mnist/neural_network.c
@@ -4,18 +4,10 @@
 #include <math.h>
 #include <time.h>
 
-#include "struct/neuron.c"
+#include "struct/neuron.h"
 
 #define TAUX_APPRENTISSAGE 0.15 // Définit le taux d'apprentissage du réseau neuronal, donc la rapidité d'adaptation du modèle (compris entre 0 et 1)
 
-void creation_du_reseau_neuronal(Reseau* reseau_neuronal, int* neurones_par_couche, int nb_couches);
-void suppression_du_reseau_neuronal(Reseau* reseau_neuronal);
-void forward_propagation(Reseau* reseau_neuronal);
-int* creation_de_la_sortie_voulue(Reseau* reseau_neuronal, int pos_nombre_voulu);
-void backward_propagation(Reseau* reseau_neuronal, int* sortie_voulue);
-void modification_du_reseau_neuronal(Reseau* reseau_neuronal);
-void initialisation_du_reseau_neuronal(Reseau* reseau_neuronal);
-
 
 
 void creation_du_reseau_neuronal(Reseau* reseau_neuronal, int* neurones_par_couche, int nb_couches) {
diff --git a/src/mnist/neural_network.h b/src/mnist/neural_network.h
new file mode 100644
index 0000000..82a07c7
--- /dev/null
+++ b/src/mnist/neural_network.h
@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <time.h>
+
+#include "struct/neuron.h"
+
+#ifndef DEF_NEURAL_NETWORK_H
+#define DEF_NEURAL_NETWORK_H
+
+void creation_du_reseau_neuronal(Reseau* reseau_neuronal, int* neurones_par_couche, int nb_couches);
+void suppression_du_reseau_neuronal(Reseau* reseau_neuronal);
+void forward_propagation(Reseau* reseau_neuronal);
+int* creation_de_la_sortie_voulue(Reseau* reseau_neuronal, int pos_nombre_voulu);
+void backward_propagation(Reseau* reseau_neuronal, int* sortie_voulue);
+void modification_du_reseau_neuronal(Reseau* reseau_neuronal);
+void initialisation_du_reseau_neuronal(Reseau* reseau_neuronal);
+
+
+#endif
diff --git a/src/mnist/neuron_io.c b/src/mnist/neuron_io.c
index a2eb602..09f148f 100644
--- a/src/mnist/neuron_io.c
+++ b/src/mnist/neuron_io.c
@@ -3,12 +3,11 @@
 #include <stdint.h>
 #include <inttypes.h>
 
-#include "struct/neuron.c"
-
-
+#include "struct/neuron.h"
 #define MAGIC_NUMBER 2023
 
 
+
 Neurone* lire_neurone(uint32_t nb_poids_sortants, FILE *ptr) {
     Neurone* neurone = malloc(sizeof(Neurone));
     float activation;
diff --git a/src/mnist/neuron_io.h b/src/mnist/neuron_io.h
new file mode 100644
index 0000000..2a9864a
--- /dev/null
+++ b/src/mnist/neuron_io.h
@@ -0,0 +1,17 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include "struct/neuron.h"
+
+#ifndef DEF_NEURON_IO_H
+#define DEF_NEURON_IO_H
+
+Neurone* lire_neurone(uint32_t nb_poids_sortants, FILE *ptr);
+Neurone** lire_neurones(uint32_t nb_neurones, uint32_t nb_poids_sortants, FILE *ptr);
+Reseau* lire_reseau(char* filename);
+void ecrire_neurone(Neurone* neurone, int poids_sortants, FILE *ptr);
+int ecrire_reseau(char* filename, Reseau* reseau);
+
+
+#endif
diff --git a/src/mnist/preview.h b/src/mnist/preview.h
new file mode 100644
index 0000000..b7be4a3
--- /dev/null
+++ b/src/mnist/preview.h
@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#ifndef DEF_PREVIEW_H
+#define DEF_PREVIEW_H
+
+uint32_t swap_endian(uint32_t val);
+void print_image(unsigned int width, unsigned int height, FILE* ptr, int start);
+void read_mnist_images(char* filename, unsigned int* labels);
+unsigned int* read_mnist_labels(char* filename);
+
+#endif
+
+               
\ No newline at end of file
diff --git a/src/mnist/struct/neuron.c b/src/mnist/struct/neuron.h
similarity index 100%
rename from src/mnist/struct/neuron.c
rename to src/mnist/struct/neuron.h