diff --git a/.gitignore b/.gitignore
index d5417f3..ee66f5d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,3 @@
+singleFile.c
 main.exe
-.vscode/
-dataBackup/
\ No newline at end of file
+.vscode/
\ No newline at end of file
diff --git a/README.md b/README.md
index 00a83f3..9af32b0 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Ce projet a pour but de créer un système de gestion de conférences en C.
 
 ## Requis
 
-- gcc sur windows avec [MinGW](https://sourceforge.net/projects/mingw/)
+- gcc sur windows (MinGW)[https://sourceforge.net/projects/mingw/]
 
 ## Installation
 
diff --git a/conf.c b/conf.c
index 96baeed..9278f44 100644
--- a/conf.c
+++ b/conf.c
@@ -3,331 +3,283 @@
 #include <string.h>
 #include "conf.h"
 
-int findConfId(ptConf confChain)
-{
+int findConfId(ptConf confChain) {
     ptConf px = confChain;
     int max = 0;
 
-    while (px->next != NULL)
-    {
-        if (px->id > max)
-        {
-            max = px->id;
+    while (px -> next != NULL) {
+        if (px -> id > max) {
+            max = px -> id;
         }
-
-        px = px->next;
+		
+		px = px -> next;
     }
 
     return max + 1;
 }
 
-ptConf newConfChain()
-{
-    ptConf confChain = (ptConf)malloc(sizeof(tConf));
+ptConf newConfChain() {
+    ptConf confChain = (ptConf) malloc(sizeof(tConf));
 
-    confChain->next = (ptConf)malloc(sizeof(tConf));
-    confChain->next->next = NULL;
-    confChain->id = -1;
+    confChain -> next = (ptConf) malloc(sizeof(tConf));
+    confChain -> next -> next = NULL;
+    confChain -> id = -1;
 
     return confChain;
 }
 
-void addConf(ptConf confChain, int id, char title[], char speaker[], int day, int month, int year)
-{
+void addConf(ptConf confChain, int id, char title[], char speaker[], int day, int month, int year) {
     ptConf px = confChain;
 
-    while (px->next != NULL)
-    {
-        px = px->next;
+    while (px -> next != NULL) {
+        px = px -> next;
     }
 
-    px->id = id;
-    px->day = day;
-    px->month = month;
-    px->year = year;
-    strcpy(px->title, title);
-    strcpy(px->speaker, speaker);
-    px->listeners = (ptListenerList)malloc(sizeof(tListenerList));
-    px->listeners->next = (ptListenerList)malloc(sizeof(tListenerList));
-    px->listeners->listener = NULL;
-    px->listeners->next->next = NULL;
-    px->next = (ptConf)malloc(sizeof(tConf));
-    px->next->next = NULL;
+    px -> id = id;
+    px -> day = day;
+    px -> month = month;
+    px -> year = year;
+    strcpy(px -> title, title);
+    strcpy(px -> speaker, speaker);
+    px -> listeners = (ptListenerList) malloc(sizeof(tListenerList));
+	px -> listeners -> next = (ptListenerList) malloc(sizeof(tListenerList));
+    px -> listeners -> listener = NULL;
+    px -> listeners -> next -> next = NULL;
+    px -> next = (ptConf) malloc(sizeof(tConf));
+    px -> next -> next = NULL;
 }
 
-void removeConf(ptConf confChain, int id)
-{
+void removeConf(ptConf confChain, int id) {
     ptConf px = confChain;
 
-    while (px->next != NULL && px->next->id != id)
-    {
-        px = px->next;
+    while (px -> next != NULL && px -> next -> id != id) {
+        px = px -> next;
     }
 
-    if (px->next != NULL && px->next->id == id)
-    {
-        ptListenerList py = px->next->listeners->next;
+    if (px -> next != NULL && px -> next -> id == id) {
+        ptListenerList py = px -> next -> listeners -> next;
 
-        while (py->next != NULL)
-        {
-            removeConfFromConfList(py->listener->confs, px->next);
-            py = py->next;
+        while (py -> next != NULL) {
+            removeConfFromConfList(py -> listener -> confs, px -> next);
+            py = py -> next;
         }
 
-        ptConf tmp = px->next->next;
-        free(px->next);
-        px->next = tmp;
+        ptConf tmp = px -> next -> next;
+        free(px -> next);
+        px -> next = tmp;
     }
 }
 
-int findListenerId(ptListener listenerChain)
-{
+int findListenerId(ptListener listenerChain) {
     ptListener px = listenerChain;
     int max = 0;
 
-    while (px->next != NULL)
-    {
-        if (px->id > max)
-        {
-            max = px->id;
+    while (px -> next != NULL) {
+        if (px -> id > max) {
+            max = px -> id;
         }
-
-        px = px->next;
+		
+		px = px -> next;
     }
 
     return max + 1;
 }
 
-ptListener newListenerChain()
-{
-    ptListener listenerChain = (ptListener)malloc(sizeof(tListener));
+ptListener newListenerChain() {
+    ptListener listenerChain = (ptListener) malloc(sizeof(tListener));
 
-    listenerChain->prev = NULL;
-    listenerChain->next = (ptListener)malloc(sizeof(tListener));
-    listenerChain->next->prev = listenerChain;
-    listenerChain->next->next = NULL;
-    listenerChain->id = -1;
+    listenerChain -> prev = NULL;
+    listenerChain -> next = (ptListener) malloc(sizeof(tListener));
+    listenerChain -> next -> prev = listenerChain;
+    listenerChain -> next -> next = NULL;
+    listenerChain -> id = -1;
 
     return listenerChain;
 }
 
-int addListener(ptListener listenerChain, int id, char name[], int age, int level)
-{
-    if (level < 0 || level > 5)
-    {
+int addListener(ptListener listenerChain, int id, char name[], int age, int level) {
+    if (level < 0 || level > 5) {
         return -1;
     }
 
     ptListener px = listenerChain;
 
-    while (px->next != NULL)
-    {
-        px = px->next;
+    while (px -> next != NULL) {
+        px = px -> next;
     }
 
-    px->id = id;
-    strcpy(px->name, name);
-    px->age = age;
-    px->level = level;
-    px->confs = (ptConfList)malloc(sizeof(tConfList));
-    px->confs->next = (ptConfList)malloc(sizeof(tConfList));
-    px->confs->conf = NULL;
-    px->confs->next->next = NULL;
-    px->next = (ptListener)malloc(sizeof(tListener));
-    px->next->next = NULL;
-    px->next->prev = px;
+    px -> id = id;
+    strcpy(px -> name, name);
+    px -> age = age;
+    px -> level = level;
+    px -> confs = (ptConfList) malloc(sizeof(tConfList));
+    px -> confs -> next = (ptConfList) malloc(sizeof(tConfList));
+    px -> confs -> conf = NULL;
+	px -> confs -> next -> next = NULL;
+    px -> next = (ptListener) malloc(sizeof(tListener));
+    px -> next -> next = NULL;
+    px -> next -> prev = px;
     return 0;
 }
 
-void removeListener(ptListener listenerChain, int id)
-{
+void removeListener(ptListener listenerChain, int id) {
     ptListener px = listenerChain;
 
-    while (px->next != NULL && px->next->id != id)
-    {
-        px = px->next;
+    while (px -> next != NULL && px -> next -> id != id) {
+        px = px -> next;
     }
 
-    if (px->next != NULL && px->next->id == id)
-    {
-        ptConfList py = px->next->confs->next;
+    if (px -> next != NULL && px -> next -> id == id) {
+        ptConfList py = px -> next -> confs -> next;
 
-        while (py->next != NULL)
-        {
-            removeListenerFromListenerList(py->conf->listeners, px->next);
-            py = py->next;
+        while (py -> next != NULL) {
+            removeListenerFromListenerList(py -> conf -> listeners, px -> next);
+            py = py -> next;
         }
 
-        ptListener tmp = px->next->next;
-        free(px->next);
-        px->next = tmp;
-        px->next->prev = px;
+        ptListener tmp = px -> next -> next;
+        free(px -> next);
+        px -> next = tmp;
+        px -> next -> prev = px;
     }
 }
 
-void addConfToConfList(ptConfList confList, ptConf conf, int grade)
-{
+void addConfToConfList(ptConfList confList, ptConf conf, int grade) {
+	ptConfList px = confList;
+	
+	while (px -> next != NULL) {
+		px = px -> next;
+	}
+	
+	px -> conf = conf;
+	px -> next = (ptConfList) malloc(sizeof(tConfList));
+    px -> grade = grade;
+	px -> next -> next = NULL;
+}
+
+void removeConfFromConfList(ptConfList confList, ptConf conf) {
     ptConfList px = confList;
 
-    while (px->next != NULL)
-    {
-        px = px->next;
+    while (px -> next != NULL && px -> next -> conf != conf) {
+        px = px -> next;
     }
 
-    px->conf = conf;
-    px->next = (ptConfList)malloc(sizeof(tConfList));
-    px->grade = grade;
-    px->next->next = NULL;
-}
-
-void removeConfFromConfList(ptConfList confList, ptConf conf)
-{
-    ptConfList px = confList;
-
-    while (px->next != NULL && px->next->conf != conf)
-    {
-        px = px->next;
-    }
-
-    if (px->next != NULL && px->next->conf == conf)
-    {
-        ptConfList tmp = px->next->next;
-        free(px->next);
-        px->next = tmp;
+    if (px -> next != NULL && px -> next -> conf == conf) {
+        ptConfList tmp = px -> next -> next;
+        free(px -> next);
+        px -> next = tmp;
     }
 }
 
-void printConfList(ptConfList confList)
-{
-    ptConfList px = confList;
-
-    printf("Participation aux conferences : ");
-    while (px->next != NULL)
-    {
-        printf("%s(%d) ", px->conf->title, px->grade);
-        px = px->next;
-    }
-    printf("\n");
+void printConfList(ptConfList confList) {
+	ptConfList px = confList;
+	
+	printf("Participation aux conferences : ");
+	while (px -> next != NULL) {
+		printf("%s(%d) ", px -> conf -> title, px -> grade);
+		px = px -> next;
+	}
+	printf("\n");
 }
 
-void addListenerToListenerList(ptListenerList listenerList, ptListener listener, int grade)
-{
+void addListenerToListenerList(ptListenerList listenerList, ptListener listener, int grade) {
+	ptListenerList px = listenerList;
+	
+	while (px -> next != NULL) {
+		px = px -> next;
+	}
+	
+	px -> listener = listener;
+	px -> next = (ptListenerList) malloc(sizeof(tListenerList));
+    px -> grade = grade;
+	px -> next -> next = NULL;
+}
+
+void removeListenerFromListenerList(ptListenerList listenerList, ptListener listener) {
     ptListenerList px = listenerList;
 
-    while (px->next != NULL)
-    {
-        px = px->next;
+    while (px -> next != NULL && px -> next -> listener != listener) {
+        px = px -> next;
     }
 
-    px->listener = listener;
-    px->next = (ptListenerList)malloc(sizeof(tListenerList));
-    px->grade = grade;
-    px->next->next = NULL;
-}
-
-void removeListenerFromListenerList(ptListenerList listenerList, ptListener listener)
-{
-    ptListenerList px = listenerList;
-
-    while (px->next != NULL && px->next->listener != listener)
-    {
-        px = px->next;
-    }
-
-    if (px->next != NULL && px->next->listener == listener)
-    {
-        ptListenerList tmp = px->next->next;
-        free(px->next);
-        px->next = tmp;
+    if (px -> next != NULL && px -> next -> listener == listener) {
+        ptListenerList tmp = px -> next -> next;
+        free(px -> next);
+        px -> next = tmp;
     }
 }
 
-void printListenerList(ptListenerList listenerList)
-{
-    ptListenerList px = listenerList;
-
-    printf("Participants : ");
-    while (px->next != NULL)
-    {
-        printf("%s(%d) ", px->listener->name, px->grade);
-        px = px->next;
-    }
-    printf("\n");
+void printListenerList(ptListenerList listenerList) {
+	ptListenerList px = listenerList;
+	
+	printf("Participants : ");
+	while (px -> next != NULL) {
+		printf("%s(%d) ", px -> listener -> name, px -> grade);
+		px = px -> next;
+	}
+	printf("\n");
 }
 
-int participateToConf(ptConf confChain, ptListener listenerChain, int confId, int listenerId, int grade)
-{
-    if (grade < 0 || grade > 5)
-    {
+int participateToConf(ptConf confChain, ptListener listenerChain, int confId, int listenerId, int grade) {
+    if (grade < 0 || grade > 5) {
         return -1;
     }
 
-    ptConf px = confChain;
-    ptListener py = listenerChain;
-    ptListenerList pz;
-
-    while (px->next != NULL && px->id != confId)
-    {
-        px = px->next;
-    }
-
-    pz = px->listeners->next;
-    while (pz->next != NULL)
-    {
-        if (pz->listener->id == listenerId)
-        {
-            return -2;
-        }
-        pz = pz->next;
-    }
-
-    while (py->next != NULL && py->id != listenerId)
-    {
-        py = py->next;
-    }
-
-    if (px->id != confId || py->id != listenerId)
-    {
-        return -2;
-    }
-
-    addListenerToListenerList(px->listeners, py, grade);
-    addConfToConfList(py->confs, px, grade);
+	ptConf px = confChain;
+	ptListener py = listenerChain;
+	ptListenerList pz;
+	
+	while (px -> next != NULL && px -> id != confId) {
+		px = px -> next;
+	}
+	
+	pz = px -> listeners -> next;
+	while (pz -> next != NULL) {
+		if (pz -> listener -> id == listenerId) {
+			return -2;
+		}
+		pz = pz -> next;
+	}
+	
+	while (py -> next != NULL && py -> id != listenerId) {
+		py = py -> next;
+	}
+	
+	if (px -> id != confId || py -> id != listenerId) {
+		return -2;
+	}
+	
+	addListenerToListenerList(px -> listeners, py, grade);
+	addConfToConfList(py -> confs, px, grade);
 
     return 0;
 }
 
-int confGradeAvg(ptConf conf)
-{
-    ptListenerList px = conf->listeners->next;
+int confGradeAvg(ptConf conf) {
+    ptListenerList px = conf -> listeners -> next;
     int total = 0, nb = 0;
 
-    while (px->next != NULL)
-    {
-        total += px->grade;
+    while (px -> next != NULL) {
+        total += px -> grade;
         nb++;
-        px = px->next;
+        px = px -> next;
     }
 
-    if (nb != 0)
-    {
+    if (nb != 0) {
         return total / nb;
-    }
-    else
-    {
+    } else {
         return -1;
     }
+
 }
 
-int confParticipations(ptConf conf)
-{
-    ptListenerList px = conf->listeners->next;
+int confParticipations(ptConf conf) {
+    ptListenerList px = conf -> listeners -> next;
     int nb = 0;
 
-    while (px->next != NULL)
-    {
+    while (px -> next != NULL) {
         nb++;
-        px = px->next;
+        px = px -> next;
     }
 
     return nb;
diff --git a/conf.h b/conf.h
index 98a2765..6898a2b 100644
--- a/conf.h
+++ b/conf.h
@@ -3,47 +3,43 @@
 
 struct listenerList;
 
-typedef struct conf
-{
+typedef struct conf {
 	int id;
 	char title[30];
 	char speaker[20];
 	int day;
 	int month;
 	int year;
-	struct listenerList *listeners;
-	struct conf *next;
+	struct listenerList* listeners;
+	struct conf* next;
 } tConf;
 
-typedef struct confList
-{
-	struct conf *conf;
+typedef struct confList {
+	struct conf* conf;
 	int grade;
-	struct confList *next;
+	struct confList* next;
 } tConfList;
 
-typedef struct listener
-{
+typedef struct listener {
 	int id;
 	char name[20];
 	int age;
 	int level;
-	struct confList *confs;
-	struct listener *prev;
-	struct listener *next;
+	struct confList* confs;
+	struct listener* prev;
+	struct listener* next;
 } tListener;
 
-typedef struct listenerList
-{
-	struct listener *listener;
+typedef struct listenerList {
+	struct listener* listener;
 	int grade;
-	struct listenerList *next;
+	struct listenerList* next;
 } tListenerList;
 
-typedef tConf *ptConf;
-typedef tListener *ptListener;
-typedef tConfList *ptConfList;
-typedef tListenerList *ptListenerList;
+typedef tConf* ptConf;
+typedef tListener* ptListener;
+typedef tConfList* ptConfList;
+typedef tListenerList* ptListenerList;
 
 int findConfId(ptConf confChain);
 ptConf newConfChain();
diff --git a/data/confs b/data/confs
index e69de29..fa10f60 100644
--- a/data/confs
+++ b/data/confs
@@ -0,0 +1,12 @@
+1,Rapport_du_GIEC,Jean_Jouzzel,15,11,2022
+2,L_esprit_critique,Thomas_Durand,6,2,2023
+3,La_resilience,Arthur_Keller,20,10,2022
+4,American_lobbying,Salah_Oueslati,30,11,2023
+5,Crysper_case9_et_ADN,Peggy_Baron,18,10,2023
+6,Materiaux_de_demain,Emmanuel_Chirache,15,11,2023
+7,Les_IA,Matthieu_Maurer,1,6,2023
+8,Therories_du_complots,Jean_Benoit,1,4,2021
+9,Le_lacet_irlandais,Mick_Oconnell,31,3,2022
+10,Litterature_et_SF,Terry_Pratchett,15,5,2021
+11,Les_chaises_en_bois,David,24,12,2023
+12,cybersecurite_des_coquillages,Bob,6,2,2024
diff --git a/data/listeners b/data/listeners
index e69de29..d2f1a19 100644
--- a/data/listeners
+++ b/data/listeners
@@ -0,0 +1,19 @@
+1,Simon,21,3
+3,Thomas,20,3
+4,Victor,19,2
+5,Lukian,19,2
+6,Natacha,18,1
+7,Caroline,22,4
+8,Lucas,23,4
+9,Clodine,64,3
+10,Kevin,26,3
+11,Titouan,18,1
+12,Louise,20,3
+13,Chayma,22,5
+14,Elisa,23,5
+15,Erwan,19,2
+18,Marion,17,1
+19,Tom,17,1
+20,Sebastien,45,5
+21,Jean,50,5
+22,Patrick,15,5
diff --git a/data/relations b/data/relations
index e69de29..17d29d8 100644
--- a/data/relations
+++ b/data/relations
@@ -0,0 +1,6 @@
+1:12;0,1;4
+2:12;0,1;4
+3:12;0,1;4
+4:12;0,1;4
+9:20;5
+10:21;5
diff --git a/dataBackup/confs b/dataBackup/confs
new file mode 100644
index 0000000..fa10f60
--- /dev/null
+++ b/dataBackup/confs
@@ -0,0 +1,12 @@
+1,Rapport_du_GIEC,Jean_Jouzzel,15,11,2022
+2,L_esprit_critique,Thomas_Durand,6,2,2023
+3,La_resilience,Arthur_Keller,20,10,2022
+4,American_lobbying,Salah_Oueslati,30,11,2023
+5,Crysper_case9_et_ADN,Peggy_Baron,18,10,2023
+6,Materiaux_de_demain,Emmanuel_Chirache,15,11,2023
+7,Les_IA,Matthieu_Maurer,1,6,2023
+8,Therories_du_complots,Jean_Benoit,1,4,2021
+9,Le_lacet_irlandais,Mick_Oconnell,31,3,2022
+10,Litterature_et_SF,Terry_Pratchett,15,5,2021
+11,Les_chaises_en_bois,David,24,12,2023
+12,cybersecurite_des_coquillages,Bob,6,2,2024
diff --git a/dataBackup/listeners b/dataBackup/listeners
new file mode 100644
index 0000000..d2f1a19
--- /dev/null
+++ b/dataBackup/listeners
@@ -0,0 +1,19 @@
+1,Simon,21,3
+3,Thomas,20,3
+4,Victor,19,2
+5,Lukian,19,2
+6,Natacha,18,1
+7,Caroline,22,4
+8,Lucas,23,4
+9,Clodine,64,3
+10,Kevin,26,3
+11,Titouan,18,1
+12,Louise,20,3
+13,Chayma,22,5
+14,Elisa,23,5
+15,Erwan,19,2
+18,Marion,17,1
+19,Tom,17,1
+20,Sebastien,45,5
+21,Jean,50,5
+22,Patrick,15,5
diff --git a/dataBackup/relations b/dataBackup/relations
new file mode 100644
index 0000000..17d29d8
--- /dev/null
+++ b/dataBackup/relations
@@ -0,0 +1,6 @@
+1:12;0,1;4
+2:12;0,1;4
+3:12;0,1;4
+4:12;0,1;4
+9:20;5
+10:21;5
diff --git a/fileManager.c b/fileManager.c
index c4a1449..6c81bec 100644
--- a/fileManager.c
+++ b/fileManager.c
@@ -3,20 +3,17 @@
 #include <string.h>
 #include "conf.h"
 
-void readConfs(ptConf confChain)
-{
+void readConfs(ptConf confChain) {
     FILE *file = fopen("./data/confs", "r");
     char line[100];
     char *token;
 
-    if (file == NULL)
-    {
+    if (file == NULL) {
         printf("ça marche pas.");
         return;
     }
 
-    while (fgets(line, sizeof(line), file))
-    {
+    while (fgets(line, sizeof(line), file)) {
         int id = atoi(strtok(line, ","));
         char *title = strtok(NULL, ",");
         char *speaker = strtok(NULL, ",");
@@ -30,20 +27,17 @@ void readConfs(ptConf confChain)
     fclose(file);
 }
 
-void readListeners(ptListener listenerChain)
-{
+void readListeners(ptListener listenerChain) {
     FILE *file = fopen("./data/listeners", "r");
     char line[100];
     char *token;
 
-    if (file == NULL)
-    {
+    if (file == NULL) {
         printf("ça marche pas.");
         return;
     }
 
-    while (fgets(line, sizeof(line), file))
-    {
+    while (fgets(line, sizeof(line), file)) {
         int id = atoi(strtok(line, ","));
         char *name = strtok(NULL, ",");
         int day = atoi(strtok(NULL, ","));
@@ -54,25 +48,21 @@ void readListeners(ptListener listenerChain)
     fclose(file);
 }
 
-void readRelations(ptConf confChain, ptListener listenerChain)
-{
-    FILE *file = fopen("./data/relations", "r");
-    char line[100];
-    char *token1;
+void readRelations(ptConf confChain, ptListener listenerChain) {
+	FILE *file = fopen("./data/relations", "r");
+	char line[100];
+	char *token1;
     char *token2;
-
-    if (file == NULL)
-    {
-        printf("ça marche pas.");
-        return;
-    }
-
-    while (fgets(line, sizeof(line), file))
-    {
+	
+	if (file == NULL) {
+		printf("ça marche pas.");
+		return;
+	}
+	
+	while (fgets(line, sizeof(line), file)) {
         int confId = atoi(strtok(line, ":"));
 
-        while ((token1 = strtok(NULL, ";")) != NULL && (token2 = strtok(NULL, ",")) != NULL)
-        {
+        while ((token1 = strtok(NULL, ";")) != NULL && (token2 = strtok(NULL, ",")) != NULL) {
             participateToConf(confChain, listenerChain, confId, atoi(token1), atoi(token2));
         }
     }
@@ -80,61 +70,50 @@ void readRelations(ptConf confChain, ptListener listenerChain)
     fclose(file);
 }
 
-void saveConf(ptConf confChain)
-{
+void saveConf(ptConf confChain) {
     FILE *file = fopen("./data/confs", "w");
     ptConf px = confChain;
-    while (px->next != NULL)
-    {
-        fprintf(file, "%d,%s,%s,%d,%d,%d\n", px->id, px->title, px->speaker, px->day, px->month, px->year);
-        px = px->next;
+    while(px -> next != NULL){
+        fprintf(file,"%d,%s,%s,%d,%d,%d\n",px -> id,px -> title,px -> speaker,px -> day,px -> month,px -> year);
+        px = px -> next;
     }
     fclose(file);
 }
 
-void saveListeners(ptListener listenerChain)
-{
+void saveListeners(ptListener listenerChain) {
     FILE *file = fopen("./data/listeners", "w");
     ptListener px = listenerChain;
-    while (px->next != NULL)
-    {
-        fprintf(file, "%d,%s,%d,%d\n", px->id, px->name, px->age, px->level);
-        px = px->next;
+    while(px -> next != NULL){
+        fprintf(file,"%d,%s,%d,%d\n",px -> id,px -> name,px -> age,px -> level);
+        px = px -> next;
     }
     fclose(file);
 }
 
-void saveRelations(ptConf confChain)
-{
+void saveRelations(ptConf confChain) {
     FILE *file = fopen("./data/relations", "w");
     ptConf px = confChain;
     ptListenerList py;
     printf("test");
-    while (px->next != NULL)
-    {
+    while(px -> next != NULL){
         printf("test");
-        py = px->listeners->next;
+        py = px -> listeners -> next;
 
-        if (py->next != NULL)
-        {
-            fprintf(file, "%d:", px->id);
-        }
+        if (py -> next != NULL) {
+            fprintf(file, "%d:", px -> id);
+        }            
 
-        while (py->next != NULL)
-        {
-            fprintf(file, "%d;%d", py->listener->id, py->grade);
-            if (py->next->next != NULL)
-            {
+        while (py -> next != NULL) {
+            fprintf(file, "%d;%d", py -> listener -> id, py -> grade);
+            if (py -> next -> next != NULL) {
                 fprintf(file, ",");
-            }
-            else
-            {
+            } else {
                 fprintf(file, "\n");
             }
-            py = py->next;
+            py = py -> next;
         }
 
-        px = px->next;
+        px = px -> next;
     }
     fclose(file);
 }
\ No newline at end of file