diff --git a/chaise.bat b/chaise.bat
deleted file mode 100644
index 7e776fe..0000000
--- a/chaise.bat
+++ /dev/null
@@ -1,23 +0,0 @@
-@echo off
-setlocal
-
-:: Vérifier si Dev-Cpp est installé
-reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Dev-Cpp" >nul 2>&1
-if %errorlevel% equ 0 (
-    for /f "tokens=2*" %%a in ('reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Dev-Cpp" /v Location ^| find "Location"') do (
-        set "mingwBin=%%b\MinGW64\bin"
-    )
-
-    :: Ajouter le chemin vers le bin de MinGW à la variable d'environnement PATH
-    echo %PATH% | find "%mingwBin%" >nul
-    if not errorlevel 1 (
-        echo Le chemin d'accès aux bin de MinGW est déjà présent dans la variable d'environnement PATH.
-    ) else (
-        setx PATH "%PATH%;%mingwBin%" -m
-        echo Le chemin d'accès aux bin de MinGW a été ajouté à la variable d'environnement PATH.
-    )
-) else (
-    echo Dev-Cpp n'est pas installé sur cet ordinateur.
-)
-
-endlocal
\ No newline at end of file
diff --git a/conf.c b/conf.c
index 6b7db6d..5d023ac 100644
--- a/conf.c
+++ b/conf.c
@@ -21,7 +21,9 @@ int findConfId(ptConf confChain) {
 ptConf newConfChain() {
     ptConf confChain = (ptConf) malloc(sizeof(tConf));
 
-    confChain -> next = NULL;
+    confChain -> next = (ptConf) malloc(sizeof(tConf));
+    confChain -> next -> next = NULL;
+    confChain -> id = -1;
 
     return confChain;
 }
@@ -40,7 +42,9 @@ void addConf(ptConf confChain, int id, char title[], char speaker[], int day, in
     strcpy(px -> title, title);
     strcpy(px -> speaker, speaker);
     px -> listeners = (ptListenerList) malloc(sizeof(tListenerList));
-	px -> listeners -> next = NULL;
+	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;
 }
@@ -48,44 +52,21 @@ void addConf(ptConf confChain, int id, char title[], char speaker[], int day, in
 void removeConf(ptConf confChain, int id) {
     ptConf px = confChain;
 
-    if (px -> next -> next == NULL) {
-		ptListenerList py = px -> listeners;
-		
-		while (py -> next != NULL) {
-			ptConfList pz = py -> listener -> confs;
-			
-			while (pz -> next != NULL) {
-				if (pz -> next -> next )
-				
-				pz = pz -> next;
-			}
-			
-			py = py -> 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;
+
+        while (py -> next != NULL) {
+            removeConfFromConfList(py -> listener -> confs, px -> next);
+            py = py -> next;
+        }
+
+        ptConf tmp = px -> next -> next;
         free(px -> next);
-        px -> next = NULL;
-    } else if (px -> id == id) {
-        px -> id = px -> next -> id;
-        strcpy(px -> title, px -> next -> title);
-        strcpy(px -> speaker, px -> next -> speaker);
-        px -> day = px -> next -> day;
-        px -> month = px -> next -> month;
-        px -> year = px -> next -> year;
-
-        ptConf tmp = px -> next;
-        px -> next = px -> next -> next;
-        free(tmp);
-    } else {
-        while (px -> next != NULL && px -> next -> id != id) {
-            px = px -> next;
-        }
-
-        if (px -> next -> id == id) {
-            ptConf tmp = px -> next;
-            px -> next = px -> next -> next;
-            free(tmp);
-        }
+        px -> next = tmp;
     }
 }
 
@@ -108,7 +89,9 @@ ptListener newListenerChain() {
     ptListener listenerChain = (ptListener) malloc(sizeof(tListener));
 
     listenerChain -> prev = NULL;
-    listenerChain -> next = NULL;
+    listenerChain -> next = (ptListener) malloc(sizeof(tListener));
+    listenerChain -> next -> prev = listenerChain;
+    listenerChain -> id = -1;
 
     return listenerChain;
 }
@@ -129,7 +112,9 @@ int addListener(ptListener listenerChain, int id, char name[], int age, int leve
     px -> age = age;
     px -> level = level;
     px -> confs = (ptConfList) malloc(sizeof(tConfList));
-	px -> confs -> next = NULL;
+    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;
@@ -139,30 +124,22 @@ int addListener(ptListener listenerChain, int id, char name[], int age, int leve
 void removeListener(ptListener listenerChain, int id) {
     ptListener px = listenerChain;
 
-    if (px -> next -> next == NULL) {
+    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;
+
+        while (py -> next != NULL) {
+            removeListenerFromListenerList(py -> conf -> listeners, px -> next);
+            py = py -> next;
+        }
+
+        ptListener tmp = px -> next -> next;
         free(px -> next);
-        px -> next = NULL;
-    } else if (px -> id == id) {
-        px -> id = px -> next -> id;
-        strcpy(px -> name, px -> next -> name);
-        px -> age = px -> next -> age;
-        px -> level = px -> next -> level;
-
-        ptListener tmp = px -> next;
-        px -> next = px -> next -> next;
+        px -> next = tmp;
         px -> next -> prev = px;
-        free(tmp);
-    } else {
-        while (px -> next != NULL && px -> next -> id != id) {
-            px = px -> next;
-        }
-
-        if (px -> next -> id == id) {
-            ptListener tmp = px -> next;
-            px -> next = px -> next -> next;
-            px -> next -> prev = px;
-            free(tmp);
-        }
     }
 }
 
@@ -179,6 +156,25 @@ void addConfToConfList(ptConfList confList, ptConf conf, int grade) {
 	px -> next -> next = NULL;
 }
 
+void removeConfFromConfList(ptConfList confList, ptConf conf) {
+    ptConfList px = confList;
+
+    while (px -> next != NULL && px -> conf != conf) {
+        px = px -> next;
+    }
+
+    printConfList(confList -> next);
+    printf("%d\n", px -> conf -> id);
+
+    if (px -> next != NULL && px -> next -> conf == conf) {
+        ptConfList tmp = px -> next -> next;
+        free(px -> next);
+        px -> next = tmp;
+    }
+
+    system("pause");
+}
+
 void printConfList(ptConfList confList) {
 	ptConfList px = confList;
 	
@@ -203,10 +199,24 @@ void addListenerToListenerList(ptListenerList listenerList, ptListener listener,
 	px -> next -> next = NULL;
 }
 
+void removeListenerFromListenerList(ptListenerList listenerList, ptListener listener) {
+    ptListenerList px = listenerList;
+
+    while (px -> next != NULL && px -> listener != listener) {
+        px = px -> next;
+    }
+
+    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 : ");
+	printf("Participants : ");
 	while (px -> next != NULL) {
 		printf("%s(%d) ", px -> listener -> name, px -> grade);
 		px = px -> next;
@@ -227,7 +237,7 @@ int participateToConf(ptConf confChain, ptListener listenerChain, int confId, in
 		px = px -> next;
 	}
 	
-	pz = px -> listeners;
+	pz = px -> listeners -> next;
 	while (pz -> next != NULL) {
 		if (pz -> listener -> id == listenerId) {
 			return -2;
@@ -250,7 +260,7 @@ int participateToConf(ptConf confChain, ptListener listenerChain, int confId, in
 }
 
 int confGradeAvg(ptConf conf) {
-    ptListenerList px = conf -> listeners;
+    ptListenerList px = conf -> listeners -> next;
     int total = 0, nb = 0;
 
     while (px -> next != NULL) {
@@ -268,7 +278,7 @@ int confGradeAvg(ptConf conf) {
 }
 
 int confParticipations(ptConf conf) {
-    ptListenerList px = conf -> listeners;
+    ptListenerList px = conf -> listeners -> next;
     int nb = 0;
 
     while (px -> next != NULL) {
diff --git a/conf.h b/conf.h
index ac9c7f9..6898a2b 100644
--- a/conf.h
+++ b/conf.h
@@ -50,8 +50,10 @@ ptListener newListenerChain();
 int addListener(ptListener listenerChain, int id, char name[], int age, int level);
 void removeListener(ptListener listenerChain, int id);
 void addConfToConfList(ptConfList confList, ptConf conf, int grade);
+void removeConfFromConfList(ptConfList confList, ptConf conf);
 void printConfList(ptConfList confList);
 void addListenerToListenerList(ptListenerList listenerList, ptListener listener, int grade);
+void removeListenerFromListenerList(ptListenerList listenerList, ptListener listener);
 void printListenerList(ptListenerList listenerList);
 int participateToConf(ptConf confChain, ptListener listenerChain, int confId, int listenerId, int grade);
 int confGradeAvg(ptConf conf);
diff --git a/data/confs b/data/confs
index 345e76f..fbe43fa 100644
--- a/data/confs
+++ b/data/confs
@@ -1,4 +1,3 @@
-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
@@ -9,3 +8,4 @@
 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/relations b/data/relations
index a8edff2..423a92f 100644
--- a/data/relations
+++ b/data/relations
@@ -1,2 +1,5 @@
 1:12;0,1;4
+2:12;0,1;4
+3:12;0,1;4
+4:12;0,1;4
 9:20;5
diff --git a/dataBackup/confs b/dataBackup/confs
index 345e76f..fa10f60 100644
--- a/dataBackup/confs
+++ b/dataBackup/confs
@@ -9,3 +9,4 @@
 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/main.exe b/main.exe
index 5eca2de..013df2b 100644
Binary files a/main.exe and b/main.exe differ
diff --git a/screenManager.c b/screenManager.c
index 46077b4..56ca07b 100644
--- a/screenManager.c
+++ b/screenManager.c
@@ -113,18 +113,18 @@ void menuConf(ptConf confChain, ptListener listenerChain) {
 	{
 	case 1:
 	{
-		ptConf px = confChain;
+		ptConf px = confChain -> next;
 	
 		while (px -> next != NULL) {
-			printf(" Id : %d\n Titre : %s\n Conferencier : %s\n", px -> id, px -> title, px -> speaker);
-			printf(" Date : %d/%d/%d\n",px -> day, px -> month, px -> year);
-			printf(" Nombre de participants : %d\n", confParticipations(px));
+			printf("Id : %d\nTitre : %s\nConferencier : %s\n", px -> id, px -> title, px -> speaker);
+			printf("Date : %d/%d/%d\n",px -> day, px -> month, px -> year);
+			printf("Nombre de participants : %d\n", confParticipations(px));
 			if (px -> listeners -> next != NULL ) {
-				printListenerList(px -> listeners);
+				printListenerList(px -> listeners -> next);
 			}
 			int avg;
 			if ((avg = confGradeAvg(px) != -1)) {
-				printf(" Moyenne des notes : %d\n", confGradeAvg(px));
+				printf("Moyenne des notes : %d\n", confGradeAvg(px));
 			}
 			printf("\n");
 			px = px -> next;
@@ -141,19 +141,19 @@ void menuConf(ptConf confChain, ptListener listenerChain) {
 		char speaker[20];
 
 		id = findConfId(confChain);
-		printf(" Titre de la conference : ");
+		printf("Titre de la conference : ");
 		scanf("%29s", &title);
-		printf(" Nom du conferencier : ");
+		printf("Nom du conferencier : ");
 		scanf("%19s", &speaker);
-		printf(" Jour : ");
+		printf("Jour : ");
 		scanf("%d", &day);
-		printf(" Mois : ");
+		printf("Mois : ");
 		scanf("%d", &month);
-		printf(" Annee : ");
+		printf("Annee : ");
 		scanf("%d", &year);
 
 		addConf(confChain, id, title, speaker, day, month, year);
-		saveConf(confChain);
+		saveConf(confChain -> next);
 		menuConf(confChain, listenerChain);
 		break;
 	}
@@ -162,11 +162,11 @@ void menuConf(ptConf confChain, ptListener listenerChain) {
 	{
 		int id;
 
-		printf(" Id de la conference a supprimer : ");
+		printf("Id de la conference a supprimer : ");
 		scanf("%d", &id);
 
 		removeConf(confChain, id);
-		saveConf(confChain);
+		saveConf(confChain -> next);
 		menuConf(confChain, listenerChain);
 		break;
 	}
@@ -174,11 +174,11 @@ void menuConf(ptConf confChain, ptListener listenerChain) {
 	case 4:
 	{
 		int day, month, year, time;
-		printf(" Jour : ");
+		printf("Jour : ");
 		scanf("%d", &day);
-		printf(" Mois : ");
+		printf("Mois : ");
 		scanf("%d", &month);
-		printf(" Annee : ");
+		printf("Annee : ");
 		scanf("%d", &year);
 
 		time = day + 31 * month + 365 * year;
@@ -197,7 +197,7 @@ void menuConf(ptConf confChain, ptListener listenerChain) {
 			}
 		}
 
-		saveConf(confChain);
+		saveConf(confChain -> next);
 
 		menuConf(confChain, listenerChain);
 	}
@@ -216,7 +216,7 @@ void menuAbo(ptConf confChain, ptListener listenerChain) {
 	system("cls");
 	drawMenu(options, 4);
 	goToCoords(0, 12);
-	printf(" Que voulez-vous faire ? : ");
+	printf("Que voulez-vous faire ? : ");
 	int choice;
 	scanf("%d", &choice);
 
@@ -224,12 +224,12 @@ void menuAbo(ptConf confChain, ptListener listenerChain) {
 	{
 	case 1:
 	{
-		ptListener py = listenerChain;
+		ptListener py = listenerChain -> next;
 	
 		while (py -> next != NULL) {
-			printf(" Id : %d\n Nom: %s\n Age: %d\n Niveau: %d\n", py -> id, py -> name, py -> age, py -> level);
+			printf("Id : %d\nNom: %s\nAge: %d\nNiveau: %d\n", py -> id, py -> name, py -> age, py -> level);
 			if (py -> confs -> next != NULL) {
-				printConfList(py -> confs);
+				printConfList(py -> confs -> next);
 			}
 			printf("\n");
 			py = py -> next;
@@ -245,17 +245,17 @@ void menuAbo(ptConf confChain, ptListener listenerChain) {
 		char name[20];
 
 		id = findListenerId(listenerChain);
-		printf(" Nom : ");
+		printf("Nom : ");
 		scanf("%19s", &name);
-		printf(" Age : ");
+		printf("Age : ");
 		scanf("%d", &age);
-		printf(" Niveau : ");
+		printf("Niveau : ");
 		scanf("%d", &level);
 
 		if (addListener(listenerChain, id, name, age, level) != -1) {
-			saveListeners(listenerChain);
+			saveListeners(listenerChain -> next);
 		} else {
-			printf(" Le niveau de l'abonne doit etre compris entre 0 et 5.\n\n");
+			printf("Le niveau de l'abonne doit etre compris entre 0 et 5.\n\n");
 			system("pause");
 		}
 		menuAbo(confChain, listenerChain);
@@ -266,11 +266,11 @@ void menuAbo(ptConf confChain, ptListener listenerChain) {
 	{
 		int id;
 
-		printf(" Id de l'abonne a supprimer : ");
+		printf("Id de l'abonne a supprimer : ");
 		scanf("%d", &id);
 
 		removeListener(listenerChain, id);
-		saveListeners(listenerChain);
+		saveListeners(listenerChain -> next);
 		menuAbo(confChain, listenerChain);
 		break;
 	}
@@ -292,7 +292,7 @@ void menu(ptConf confChain, ptListener listenerChain)
 	goToCoords(0, 13);
 	tasse();
 	printf("\n");
-	printf(" Que voulez-vous faire ? : ");
+	printf("Que voulez-vous faire ? : ");
 	int choice;
 	scanf("%d", &choice);
 
@@ -309,17 +309,17 @@ void menu(ptConf confChain, ptListener listenerChain)
 	case 3:
 	{
 		int confId, listenerId, grade;
-		printf(" Entrez l'ID de la conference : ");
+		printf("Entrez l'ID de la conference : ");
 		scanf("%d", &confId);
-		printf(" Entrez l'ID du participant : ");
+		printf("Entrez l'ID du participant : ");
 		scanf("%d", &listenerId);
-		printf(" Entrez la note attribuee par le participant : ");
+		printf("Entrez la note attribuee par le participant : ");
 		scanf("%d", &grade);
 		
 		if (participateToConf(confChain, listenerChain, confId, listenerId, grade) != -1) {
 			saveRelations(confChain);
 		} else {
-			printf(" La note doit etre comprise entre 0 et 5 et l'abonne ne doit pas avoir deja participe a la conference\n\n");
+			printf("La note doit etre comprise entre 0 et 5 et l'abonne ne doit pas avoir deja participe a la conference\n\n");
 			system("pause");
 		}
 		
@@ -343,7 +343,7 @@ void menu(ptConf confChain, ptListener listenerChain)
 			px = px -> next;
 		}
 
-		printf(" La conférence la mieux notee est : %s\n\n", confMax -> title);
+		printf("La conférence la mieux notee est : %s\n\n", confMax -> title);
 
 		system("pause");
 		menu(confChain, listenerChain);
diff --git a/singleFile.c b/singleFile.c
index d8e8f57..6483b3e 100644
--- a/singleFile.c
+++ b/singleFile.c
@@ -119,28 +119,17 @@ void removeConf(ptConf confChain, int id)
 {
     ptConf px = confChain;
 
-    if (px->next->next == NULL)
+    if (px->next == NULL)
+    {
+        return;
+    }
+    else if (px->next->next == NULL)
     {
-        ptListenerList py = px->listeners;
-
-        while (py->next != NULL)
-        {
-            ptConfList pz = py->listener->confs;
-
-            while (pz->next != NULL)
-            {
-                if (pz->next->next)
-
-                    pz = pz->next;
-            }
-
-            py = py->next;
-        }
 
         free(px->next);
         px->next = NULL;
     }
-    else if (px->id == id)
+    else if (px->id == id && px->next->next != NULL)
     {
         px->id = px->next->id;
         strcpy(px->title, px->next->title);
@@ -226,8 +215,11 @@ int addListener(ptListener listenerChain, int id, char name[], int age, int leve
 void removeListener(ptListener listenerChain, int id)
 {
     ptListener px = listenerChain;
-
-    if (px->next->next == NULL)
+    if (px->next == NULL)
+    {
+        return;
+    }
+    else if (px->id == id && px->next->next == NULL)
     {
         free(px->next);
         px->next = NULL;
@@ -276,11 +268,52 @@ void addConfToConfList(ptConfList confList, ptConf conf, int grade)
     px->next->next = NULL;
 }
 
+void removeConfFromConfList(ptConf confChain, ptConfList confList, ptConf conf)
+{
+
+    if (confList->next == NULL)
+    {
+        return;
+    }
+    else if (confList->next->next == NULL && confList->conf == conf)
+    {
+        free(confList->next);
+        confList->next = NULL;
+    }
+    else if (confList->conf == conf && confList->next->next != NULL)
+    {
+        confList->conf = confList->next->conf;
+        confList->grade = confList->next->grade;
+        ptConfList tmp = confList->next->next;
+        free(confList->next);
+        confList->next = tmp;
+    }
+    else
+    {
+        ptConfList px = confList;
+
+        while (px->next != NULL && px->next->conf != conf)
+        {
+            if (confChain == conf && px->conf == conf->next) {
+                px->conf
+            }
+
+            px = px->next;
+        }
+
+        if (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 : ");
+    printf(" Participation aux conferences : ");
     while (px->next != NULL)
     {
         printf("%s(%d) ", px->conf->title, px->grade);
diff --git a/singleFile.exe b/singleFile.exe
new file mode 100644
index 0000000..4163420
Binary files /dev/null and b/singleFile.exe differ