diff --git a/DEV1.1/TP15/chaine.c b/DEV1.1/TP15/chaine.c
new file mode 100644
index 0000000..9924411
--- /dev/null
+++ b/DEV1.1/TP15/chaine.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "pile.h"
+
+int main(int argc, char const *argv[])
+{
+	pile *bazar;
+	char input1;
+	char input2;
+	printf(">");
+	scanf("%c%c",&input1,&input2);
+	while(input1!='q')
+	{
+		printf("input1=%c input2=%c\n", input1,input2);
+		if (input1=='+')
+		{
+			push(&bazar,input2);
+			printf("Le charactere %c a été ajouté\n", input2);
+			input1=' ';
+		}
+		else
+		{
+		if (input1=='-')
+		{
+			printf("Le charactere %c a été supprimé\n",pop(&bazar));
+			input1=' ';
+		}
+		else
+		{
+			printf(">");
+			scanf("%c%c",&input1,&input2);				
+			fflush(stdin);
+		}
+		}
+	}
+	printf("Au revoir\n");
+	return 0;
+}
\ No newline at end of file
diff --git a/DEV1.1/TP15/pile.c b/DEV1.1/TP15/pile.c
new file mode 100644
index 0000000..3783107
--- /dev/null
+++ b/DEV1.1/TP15/pile.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+struct pile
+{
+	int tete;
+	char ple[10];
+};
+
+typedef struct pile pile;
+
+int empty(pile *p)
+{
+	if(p==NULL)
+	{
+		return 1;
+	}
+	return p->tete==0;
+}
+
+char pop(pile **p)
+{
+	(*p)->tete--;
+	return (*p)->ple[(*p)->tete];
+}
+
+void push(pile **p,char v)
+{
+	if (*p==NULL)
+	{
+		pile *new=malloc(sizeof(pile));
+		new->tete=0;
+		*p=new;
+		push(p,v);
+	}else
+	{
+	(*p)->ple[(*p)->tete]=v;
+	(*p)->tete++;
+	}
+}
+
+char top(pile **p)
+{
+	char temp = pop(p);
+	push(p,temp);
+	return temp;
+}
+
+void clear(pile **p)
+{
+	while(!empty((*p)))
+	{
+		pop(p);
+	}
+}
diff --git a/DEV1.1/TP15/pile.h b/DEV1.1/TP15/pile.h
new file mode 100644
index 0000000..63ca472
--- /dev/null
+++ b/DEV1.1/TP15/pile.h
@@ -0,0 +1,19 @@
+#ifndef _pile_h
+#define _pile_h
+
+struct pile;
+
+typedef struct pile pile;
+
+int empty(pile *p);
+
+char pop(pile **p);
+
+void push(pile **p,char v);
+
+char top(pile **p);
+
+void clear(pile **p);
+
+
+#endif
\ No newline at end of file
diff --git a/DEV1.1/random/TD15.c b/DEV1.1/random/TD15.c
new file mode 100644
index 0000000..3d3cb84
--- /dev/null
+++ b/DEV1.1/random/TD15.c
@@ -0,0 +1,75 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+struct pile
+{
+	int tete;
+	int max;
+	int ple[10];
+}
+
+typedef struct pile pîle;
+
+int empty(pile *p)
+{
+	if(*p==NULL)
+	{
+		return 1;
+	}
+	return p->tete==0
+}
+
+void push(pile **p,int v)
+{
+	if (*p==NULL)
+	{
+		pile *new=malloc(sizeof(pile));
+		new->tete=0;
+		new->max=2;
+		int *tab=calloc(2,sizeof(int));
+		new->ple=tab;
+		*p=new;
+		push(p,v);
+	}else
+	{
+		if ((*p)->tete==(*p)->max)
+		{
+			int *newtab=calloc(2*(*p)->max,sizeof(int));
+			for (int i = 0; i < (*p)->max; ++i)
+			{
+				*(newtab+i)=*((*p)->ple+i);
+			}
+			int *temp=(*p)->ple;
+			(*p)->max=(*p)->max*=2;
+			(*p)->ple=newtab;
+			free(temp);
+		}
+	(*p)->ple[(*p)->tete]=v;
+	(*p)->tete++;
+	}
+}
+
+int pop(pile **p)
+{
+	(*p)->tete--;
+	return (*p)->ple[(*p)->tete];
+}
+
+int main(int argc, char const *argv[])
+{
+	pile *bordel;
+	
+	return 0;
+}
+
+/*
+exo 3:
+1) 
+(7*3+7)/7
+21,42
+
+
+
+
+
+*/
\ No newline at end of file