diff --git a/TP3/E7.c b/TP3/E7.c
new file mode 100644
index 0000000..22aa5f9
--- /dev/null
+++ b/TP3/E7.c
@@ -0,0 +1,34 @@
+/* Miroir */
+
+#include <stdio.h>
+
+#define N 255
+
+int length(char* c) {
+    int i, len = -1;
+    for (i = 0; i < N; i++) {
+        if (c[i] == '\0') {
+            len = i;
+            break;
+        }
+    }
+    return len;
+}
+
+char* miroir(char* c) {
+    int i, len = length(c);
+    static char mir[N];
+    for (i = 0; i < len; i++) {
+        mir[i] = c[len-i-1];
+    }
+    return mir;
+
+}
+
+int main() {
+    char c[N];
+    printf("Entrez du texte : ");
+    scanf("%s", &c);
+    printf("Miroir : %s\n", miroir(c));
+    return 0;
+}