diff --git a/DEV1.1/TP05/#Exo_4.c# b/DEV1.1/TP05/#Exo_4.c#
new file mode 100644
index 0000000..d109852
--- /dev/null
+++ b/DEV1.1/TP05/#Exo_4.c#
@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+  int n;
+  double x;
+  printf("entrez un nombre : ");
+  n = scanf("%lf", &x);
+  printf("%f\n", x);
+  return EXIT_SUCCESS;
+}
+
diff --git a/DEV1.1/TP05/.#Exo_4.c b/DEV1.1/TP05/.#Exo_4.c
new file mode 120000
index 0000000..1607f57
--- /dev/null
+++ b/DEV1.1/TP05/.#Exo_4.c
@@ -0,0 +1 @@
+jabbar@salle224-01.6268:1757929846
\ No newline at end of file
diff --git a/DEV1.1/TP05/Exo_4.c b/DEV1.1/TP05/Exo_4.c
new file mode 100644
index 0000000..430ed2c
--- /dev/null
+++ b/DEV1.1/TP05/Exo_4.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+  int n;
+  double x;
+  printf("entrez un nombre : ");
+  n = scanf("%lf", &x);
+  printf("%f\n", x,x,x,x,x,x);
+  return EXIT_SUCCESS;
+}
+
diff --git a/DEV1.1/TP05/Extrémités.c b/DEV1.1/TP05/Extrémités.c
new file mode 100644
index 0000000..c767cb1
--- /dev/null
+++ b/DEV1.1/TP05/Extrémités.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/TP05/Opération.c b/DEV1.1/TP05/Opération.c
new file mode 100644
index 0000000..847680c
--- /dev/null
+++ b/DEV1.1/TP05/Opération.c
@@ -0,0 +1,12 @@
+#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);
+  printf("%f\n", 5.0/2.5);
+  return EXIT_SUCCESS;
+}
diff --git a/DEV1.1/TP05/Poussières.c b/DEV1.1/TP05/Poussières.c
new file mode 100644
index 0000000..0ccdabc
--- /dev/null
+++ b/DEV1.1/TP05/Poussières.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+
+int main(void) {
+  printf("%.15f\n", 12345.678910111213);
+  return EXIT_SUCCESS;
+}