diff --git a/DEV1.1/TP12/compteur.c b/DEV1.1/TP12/compteur.c
new file mode 100644
index 0000000..74bef70
--- /dev/null
+++ b/DEV1.1/TP12/compteur.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char const *argv[])
+{
+	FILE *f;
+	f=fopen("compteur.txt","r");
+	int n = 0;
+	fread(&n,1,1,f);
+	n++;
+	f=fopen("compteur.txt","w");
+	fwrite(&n,1,1,f);
+	fclose(f);
+	printf("%d\n", n);
+	return 0;
+}
\ No newline at end of file
diff --git a/DEV1.1/TP12/compteur.txt b/DEV1.1/TP12/compteur.txt
new file mode 100644
index 0000000..aa8a04d
--- /dev/null
+++ b/DEV1.1/TP12/compteur.txt
@@ -0,0 +1,2 @@
+je suis un test
+moi aussi je suis un test 
\ No newline at end of file
diff --git a/DEV1.1/TP12/hexatrash.c b/DEV1.1/TP12/hexatrash.c
new file mode 100644
index 0000000..0fc5d1b
--- /dev/null
+++ b/DEV1.1/TP12/hexatrash.c
@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char const *argv[])
+{
+	FILE *f;
+	f=fopen(argv[1],"r");
+	int n;
+	int x=0;
+	while(feof(f)==0) 
+	{
+		printf("%06x0 ",x);
+		for (int i = 0; i < 8; ++i)
+		{
+			fread(&n,2,1,f);
+			if (feof(f)==0)
+			{
+				printf("%04x ", n);
+			}else{break;}
+		}
+		x++;
+		printf("\n");
+	}
+	fclose(f);
+}
\ No newline at end of file
diff --git a/DEV1.1/TP12/numerotation.c b/DEV1.1/TP12/numerotation.c
new file mode 100644
index 0000000..2a6edb5
--- /dev/null
+++ b/DEV1.1/TP12/numerotation.c
@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char const *argv[])
+{
+	FILE *f;
+	f=fopen(argv[1],"r");
+	char * buffer = NULL;
+	size_t x=0;
+	int y=0;
+	while((getline(&buffer,&x,f))!=-1) 
+	{
+		printf("%06d ",y);
+		printf("%s",buffer);
+		y++;
+	}
+	fclose(f);
+	printf("\n");
+}
\ No newline at end of file
diff --git a/DEV1.1/TP12/t1.csv b/DEV1.1/TP12/t1.csv
new file mode 100644
index 0000000..e69de29
diff --git a/DEV1.1/TP12/tableur.c b/DEV1.1/TP12/tableur.c
new file mode 100644
index 0000000..6779f70
--- /dev/null
+++ b/DEV1.1/TP12/tableur.c
@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(void){
+	int tab1[2][5];
+	int i;
+	int j;
+	for(i=0;i<2;i++){
+		for(j=1;j<=5;j++){
+			tab1[i][j-1]=j;
+		}
+	}
+	for(i=0;i<2;i++){
+		for(j=0;j<5;j++){
+			printf("%d ",tab1[i][j]);
+		}
+		printf("\n");
+	}
+
+	int tab2[3][5];
+	int nb=1;
+	for(i=0;i<3;i++){
+		for(j=0;j<5;j++){
+			tab2[i][j]=nb;
+			nb++;
+		}
+	}
+	for(i=0;i<3;i++){
+		for(j=0;j<5;j++){
+			printf("%d ",tab2[i][j]);
+		}
+		printf("\n");
+	}
+
+	int tab3[5][5]={0};
+	nb=0;
+	for(i=0;i<5;i++){
+		for(j=1;j<=nb;j++){
+			tab3[i][j-1]=j;
+		}
+		nb++;
+	}
+	for(i=0;i<5;i++){
+		for(j=0;j<5;j++){
+			printf("%d ",tab3[i][j]);
+		}
+		printf("\n");
+	}
+
+	FILE *f;
+	f=fopen("t1.csv","w");
+	char tabOut[100];
+	nb=0;
+	char temp[]="0";
+	for(i=0;i<2;i++){
+		for(j=1;j<=5;j++){
+			temp[0]=tab1[i][j]+temp[0];
+			strcat(tabOut,temp);
+		}
+		printf("%s",tabOut);
+		tabOut[0]=0;
+		temp[0]="0";
+	}	
+
+
+
+
+
+
+	return EXIT_SUCCESS;
+}
\ No newline at end of file