diff --git a/DEV1.1/TP01/chiffre.c b/DEV1.1/TP01/chiffre.c
new file mode 100644
index 0000000..5ff5b9d
--- /dev/null
+++ b/DEV1.1/TP01/chiffre.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+int main(void) {
+	printf("%c",55);
+
+return 0;
+}
\ No newline at end of file
diff --git a/DEV1.1/TP01/salut.c b/DEV1.1/TP01/salut.c
index 60800b2..78155c1 100644
--- a/DEV1.1/TP01/salut.c
+++ b/DEV1.1/TP01/salut.c
@@ -1,7 +1,7 @@
 #include <stdio.h>
 
 int main() {
-	printf("Hello World ! \n");
+	printf("%c","Hello World !");
 
 return 0;
 }
\ No newline at end of file
diff --git a/DEV1.1/TP02/chiffres.c b/DEV1.1/TP02/chiffres.c
new file mode 100644
index 0000000..7325f63
--- /dev/null
+++ b/DEV1.1/TP02/chiffres.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main() {
+	printf("%c \n",55);
+
+return 0;
+}
\ No newline at end of file
diff --git a/DEV1.1/TP02/dust.c b/DEV1.1/TP02/dust.c
new file mode 100644
index 0000000..772bca3
--- /dev/null
+++ b/DEV1.1/TP02/dust.c
@@ -0,0 +1,9 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+  printf("%.15f\n", 12345.678910111213);
+  return EXIT_SUCCESS;
+}
+
+// ?????????? 
\ No newline at end of file
diff --git a/DEV1.1/TP02/encodages.c b/DEV1.1/TP02/encodages.c
new file mode 100644
index 0000000..facf75e
--- /dev/null
+++ b/DEV1.1/TP02/encodages.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+#include <stdlib.h>
+int main(void) {
+  printf("Unicode : %c%c\n", '\xC3', '\xAE');
+  printf("Latin 1 : %c\n", '\xEE');
+  return EXIT_SUCCESS;
+}
\ No newline at end of file
diff --git a/DEV1.1/TP02/extract.c b/DEV1.1/TP02/extract.c
new file mode 100644
index 0000000..928e948
--- /dev/null
+++ b/DEV1.1/TP02/extract.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+  char num;
+  printf("%s","Entrez votre numero de securite sociale: ");
+  num = getchar();
+  int annee1=getchar();
+  int annee2=getchar();
+  int mois1=getchar();
+  int mois2=getchar();
+  printf(" %c%c/%c%c \n",annee1,annee2,mois1,mois2);
+  return EXIT_SUCCESS;
+
+}
\ No newline at end of file
diff --git a/DEV1.1/TP02/extremite.c b/DEV1.1/TP02/extremite.c
new file mode 100644
index 0000000..c767cb1
--- /dev/null
+++ b/DEV1.1/TP02/extremite.c
@@ -0,0 +1,9 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+  printf("%f\n", +1.0/0.0);
+  printf("%f\n", -1.0/0.0);
+  printf("%f\n", -0.0/0.0);
+  return EXIT_SUCCESS;
+}
\ No newline at end of file
diff --git a/DEV1.1/TP02/interets.c b/DEV1.1/TP02/interets.c
new file mode 100644
index 0000000..e45ca71
--- /dev/null
+++ b/DEV1.1/TP02/interets.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void){
+	double n=0;
+	int annee=1;
+	printf("saisir la somme a investir: ");
+	scanf("lf",&n);
+	n= n + (n*0.04);
+	printf("somme au bout de %d annee(s): %9.4f \n", annee, n);
+	annee+=1;
+	n= n + (n*0.04);
+	printf("somme au bout de %d annee(s): %9.4f \n", annee, n);
+	annee+=1;
+	n= n + (n*0.04);
+	printf("somme au bout de %d annee(s): %9.4f \n", annee, n);
+	annee+=1;
+	n= n + (n*0.04);
+	printf("somme au bout de %d annee(s): %9.4f \n", annee, n);
+	annee+=1;
+	n= n + (n*0.04);
+	printf("somme au bout de %d annee(s): %9.4f \n", annee, n);
+	annee+=1;
+	n= n + (n*0.04);
+	printf("somme au bout de %d annee(s): %9.4f \n", annee, n);
+	annee+=1;
+	n= n + (n*0.04);
+	printf("somme au bout de %d annee(s): %9.4f \n", annee, n);
+	annee+=1;
+}
\ No newline at end of file
diff --git a/DEV1.1/TP02/lettres.c b/DEV1.1/TP02/lettres.c
new file mode 100644
index 0000000..85c0eca
--- /dev/null
+++ b/DEV1.1/TP02/lettres.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main() {
+	printf("%c \n",65);
+
+return 0;
+}
\ No newline at end of file
diff --git a/DEV1.1/TP02/operation.c b/DEV1.1/TP02/operation.c
new file mode 100644
index 0000000..866d93d
--- /dev/null
+++ b/DEV1.1/TP02/operation.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+  printf("%f\n", 5.0+2.5);
+  printf("%f\n", 5.0-2.5);
+  printf("%f\n", 5.0*2.5);
+  printf("%f\n", 5.0/2.5);
+  // % marche pas pour les double ou floatprintf("%f\n", 5.0%2.5);
+  return EXIT_SUCCESS;
+}
\ No newline at end of file
diff --git a/DEV1.1/TP02/telescopage.c b/DEV1.1/TP02/telescopage.c
new file mode 100644
index 0000000..341e327
--- /dev/null
+++ b/DEV1.1/TP02/telescopage.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void){
+	double n=0;
+	printf("saisir un reel: ");
+	scanf("%lf",&n);
+	printf("%.10e \n",n);
+	char lettre;
+	printf("saisir un charactere: ");
+	lettre = getchar();
+	lettre = getchar();
+	printf("%c%c%c%c%c",lettre,lettre,lettre,lettre,lettre);
+}
\ No newline at end of file