diff --git a/exo3.c b/exo3.c
deleted file mode 100644
index e22a3c0..0000000
--- a/exo3.c
+++ /dev/null
@@ -1,90 +0,0 @@
-include <stdio.h>
-#include <stdlib.h>
-
-void deplacerPremierOctet(const char *filename) {
-    FILE *file;
-    unsigned char first_byte;
-    long file_size;
-    unsigned char *buffer;
-
-
-    file = fopen(filename, "r+b");
-    if (file == NULL) {
-        perror("Erreur d'ouverture");
-        exit(EXIT_FAILURE);
-    }
-
-    if (fread(&first_byte, 1, 1, file) != 1) {
-        perror("Erreur de lecture");
-        fclose(file);
-        exit(EXIT_FAILURE);
-    }
-
-    fseek(file, 0, SEEK_END);
-    if (fwrite(&first_byte, 1, 1, file) != 1) {
-        perror("Erreur d'écriture");
-        fclose(file);
-        exit(EXIT_FAILURE);
-    }
-
-    file_size = ftell(file);
-    fclose(file);
-
-    file = fopen(filename, "r+b");
-    if (file == NULL) {
-        perror("Erreur d'ouverture");
-        exit(EXIT_FAILURE);
-    }
-
-    buffer = (unsigned char *)malloc(file_size - 1);
-    if (buffer == NULL) {
-        perror("Erreur d'allocation mémoire");
-        fclose(file);
-        exit(EXIT_FAILURE);
-    }
-
-    fseek(file, 1, SEEK_SET);
-    if (fread(buffer, 1, file_size - 1, file) != file_size - 1) {
-        perror("Erreur de lecture");
-        free(buffer);
-        fclose(file);
-        exit(EXIT_FAILURE);
-    }
-    fclose(file);
-
-    file = fopen(filename, "wb");
-    if (file == NULL) {
-        perror("Erreur d'ouverture");
-        free(buffer);
-        exit(EXIT_FAILURE);
-    }
-
-    if (fwrite(buffer, 1, file_size - 1, file) != file_size - 1) {
-        perror("Erreur d'écriture");
-        free(buffer);
-        fclose(file);
-        exit(EXIT_FAILURE);
-    }
-
-    if (fwrite(&first_byte, 1, 1, file) != 1) {
-        perror("Erreur d'écriture");
-        free(buffer);
-        fclose(file);
-        exit(EXIT_FAILURE);
-    }
-
-    free(buffer);
-    fclose(file);
-
-    printf("Modification effectuée.\n");
-}
-
-int main(int argc, char *argv[]) {
-    if (argc != 2) {
-        fprintf(stderr, "Usage: %s <toto.c>\n", argv[0]);
-        exit(EXIT_FAILURE);
-    }
-
-    deplacerPremierOctet(argv[1]);
-    return 0;
-}
\ No newline at end of file