diff --git a/Dev1.1/Dev1110/Distance b/Dev1.1/Dev1110/Distance
new file mode 100755
index 0000000..cac79ed
Binary files /dev/null and b/Dev1.1/Dev1110/Distance differ
diff --git a/Dev1.1/Dev1110/Distance.c b/Dev1.1/Dev1110/Distance.c
new file mode 100644
index 0000000..6091594
--- /dev/null
+++ b/Dev1.1/Dev1110/Distance.c
@@ -0,0 +1,24 @@
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void){
+	int x_un;
+	int x_deux;
+	int y_un;
+	int y_deux;
+	int x;
+	int y;
+	printf("rentrez coordonnées x du premier point :");
+	scanf("%d",x_un);
+	 printf("rentrez coordonnées y du premier point :");                                                       scanf("%d",y_un);
+	printf("rentrez coordonnées x du deuxieme point :");
+	  scanf("%d",x_deux);
+	printf("rentrez coordonnées y du deuxieme point :");
+	    scanf("%d",y_deux);
+	x = fabs(x_un - x_deux);
+	y = fabs(y_un - y_deux);
+	printf("(%d,%d)",x,y);
+return EXIT_SUCCESS;
+}
+
diff --git a/Dev1.1/Dev1110/Extremités b/Dev1.1/Dev1110/Extremités
new file mode 100755
index 0000000..9c5ad40
Binary files /dev/null and b/Dev1.1/Dev1110/Extremités differ
diff --git a/Dev1.1/Dev1110/Extrémités.c b/Dev1.1/Dev1110/Extrémités.c
new file mode 100644
index 0000000..5b21785
--- /dev/null
+++ b/Dev1.1/Dev1110/Extrémités.c
@@ -0,0 +1,8 @@
+#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;
+}
diff --git a/Dev1.1/Dev1110/Poussiere b/Dev1.1/Dev1110/Poussiere
new file mode 100755
index 0000000..81056a9
Binary files /dev/null and b/Dev1.1/Dev1110/Poussiere differ
diff --git a/Dev1.1/Dev1110/Poussière.c b/Dev1.1/Dev1110/Poussière.c
new file mode 100644
index 0000000..434c446
--- /dev/null
+++ b/Dev1.1/Dev1110/Poussière.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+printf("%5.12f\n", 12345.678910111213);
+return EXIT_SUCCESS;
+}
diff --git a/Dev1.1/Dev1110/telescopage b/Dev1.1/Dev1110/telescopage
new file mode 100755
index 0000000..4dadc52
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diff --git a/Dev1.1/Dev1110/telescopage.c b/Dev1.1/Dev1110/telescopage.c
new file mode 100644
index 0000000..e2b79ed
--- /dev/null
+++ b/Dev1.1/Dev1110/telescopage.c
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+int main(void){
+	float reel;
+	int entier;
+	int decimal;
+	int pui;
+	printf("rentrez un réel :");
+	scanf("%f", &reel);
+	entier = trunc(reel);
+  decimal = reel - entier;
+	pui = log10(decimal)+1;
+	printf(" L'écriture scientifique de ce réel est : %d x %d10^-%d",entier,decimal,pui);
+	return EXIT_SUCCESS;
+}
+
+