diff --git a/DEV.1.1/Allocation_dynamique/1.Singletons b/DEV.1.1/Allocation_dynamique/1.Singletons
deleted file mode 100755
index e03b85b..0000000
Binary files a/DEV.1.1/Allocation_dynamique/1.Singletons and /dev/null differ
diff --git a/DEV.1.1/Allocation_dynamique/2.Palindromes b/DEV.1.1/Allocation_dynamique/2.Palindromes
deleted file mode 100755
index f004755..0000000
Binary files a/DEV.1.1/Allocation_dynamique/2.Palindromes and /dev/null differ
diff --git a/DEV.1.1/Allocation_dynamique/2.Palindromes.c b/DEV.1.1/Allocation_dynamique/2.Palindromes.c
deleted file mode 100644
index a242809..0000000
--- a/DEV.1.1/Allocation_dynamique/2.Palindromes.c
+++ /dev/null
@@ -1,20 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(int argc, char** argv) {
-    long int dividend;
-    long int divisor;
-    ldiv_t result;
-
-    printf("Votre dividende : ");
-    scanf("%ld", &dividend);
-
-    printf("Votre diviseur : ");
-    scanf("%ld", &divisor);
-
-    result = ldiv(dividend, divisor);
-    printf("quotient : %ld\n", result.quot);
-    printf("reste : %ld\n", result.rem);
-
-    return EXIT_SUCCESS;
-}
diff --git a/DEV.1.1/CM2/CM2A/1.Section.c b/DEV.1.1/CM2/CM2A/1.Section.c
new file mode 100644
index 0000000..13c2ddf
--- /dev/null
+++ b/DEV.1.1/CM2/CM2A/1.Section.c
@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char *argv[]) {
+    long int dividende, diviseur;
+    ldiv_t result;
+
+    if (argc < 3) {
+        printf("Usage: %s <dividend> <divisor>\n", argv[0]);
+        return EXIT_FAILURE;
+    }
+
+    sscanf(argv[1], "%ld", &dividende);
+    sscanf(argv[2], "%ld", &diviseur);
+    
+    if (diviseur == 0) {
+        printf("Erreur : le diviseur ne peut pas être zéro.\n");
+        return EXIT_FAILURE;
+    }
+
+    result = ldiv(dividende, diviseur);
+    printf("quotient : %ld\n", result.quot);
+    printf("reste : %ld\n", result.rem);
+
+    return EXIT_SUCCESS;
+}
diff --git a/DEV.1.1/CM2/CM2A/4.Sensation-Fichiers.c b/DEV.1.1/CM2/CM2A/4.Sensation-Fichiers.c
new file mode 100644
index 0000000..8681f5c
--- /dev/null
+++ b/DEV.1.1/CM2/CM2A/4.Sensation-Fichiers.c
@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void){
+    FILE *fic = fopen("reitne.txt", "r");
+    char lettre[256];
+    int i;
+
+    if(fic == NULL){
+        exit(1);
+    }    
+
+    while(fgets(lettre, 255, fic) != NULL){
+        for(i=0;i<256;i++){
+       
+            if (lettre[i] == 'x' && lettre[i-1] == 0){
+/*                printf("%d\n", lettre[i-1]/lettre[i+1]);*/
+                printf("Bonjour");
+
+            }else if(fgets(lettre,255,fic)){
+                printf("");
+               
+            }
+        }
+        printf("%s", lettre);
+    }
+   
+    printf("\n");
+    fclose(fic);
+    return 0;
+}
+
+
+
diff --git a/DEV.1.1/CM2/CM2A/Makefile b/DEV.1.1/CM2/CM2A/Makefile
new file mode 100644
index 0000000..e69de29
diff --git a/DEV.1.1/CM2/CM2A/carre.c b/DEV.1.1/CM2/CM2A/carre.c
new file mode 100644
index 0000000..e69de29
diff --git a/DEV.1.1/CM2/CM2A/lightness.c b/DEV.1.1/CM2/CM2A/lightness.c
new file mode 100644
index 0000000..ceaeecb
--- /dev/null
+++ b/DEV.1.1/CM2/CM2A/lightness.c
@@ -0,0 +1 @@
+#include "lightness.h"
\ No newline at end of file
diff --git a/DEV.1.1/CM2/CM2A/lightness.h b/DEV.1.1/CM2/CM2A/lightness.h
new file mode 100644
index 0000000..f2bf8bf
--- /dev/null
+++ b/DEV.1.1/CM2/CM2A/lightness.h
@@ -0,0 +1,4 @@
+#ifndef LIGHTNESS_H
+#define LIGHTNESS_H
+
+#endif /*LIGHTNESS_H*/
\ No newline at end of file
diff --git a/DEV.1.1/CM2/CM2A/reitne.txt b/DEV.1.1/CM2/CM2A/reitne.txt
new file mode 100644
index 0000000..497f213
--- /dev/null
+++ b/DEV.1.1/CM2/CM2A/reitne.txt
@@ -0,0 +1,2 @@
+Adresse :   0x00   0x01   0x02   0x03
+Valeur :    0x12   0x34   0x56   0x78
diff --git a/DEV.1.1/argument_ligne/test.c b/DEV.1.1/argument_ligne/test.c
new file mode 100644
index 0000000..3d1713a
--- /dev/null
+++ b/DEV.1.1/argument_ligne/test.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+int main(int argc, char *argv[]) {
+    int i;
+    printf("\nProgram name: %5", argv[0]);
+    if (argc < 2) {
+        printf("\n\nNo argument passed through command line!\n");
+    } else {
+        printf("\nArgument supplied: ");
+        for (i = 1; i < argc; i++){
+            printf("%s\t", argv[i]);
+        }
+        printf("\n");
+    }
+}