From 6c2b2b8dcd34b6280fe95d2ac844c61b7b0ef29c Mon Sep 17 00:00:00 2001
From: Geoffrey Frogeye <geoffrey@frogeye.fr>
Date: Wed, 23 Mar 2016 10:29:25 +0100
Subject: [PATCH] TP4 E3

---
 TP4/E1.c |  1 -
 TP4/E2.c |  1 -
 TP4/E3.c | 24 ++++++++++++++++++++++++
 3 files changed, 24 insertions(+), 2 deletions(-)
 create mode 100644 TP4/E3.c

diff --git a/TP4/E1.c b/TP4/E1.c
index 183d778..b1feee0 100644
--- a/TP4/E1.c
+++ b/TP4/E1.c
@@ -2,7 +2,6 @@
 
 #include <stdlib.h>
 #include <stdio.h>
-#include <math.h>
 
 int main(int argc, char *argv[]) {
     int T[] = {12, 23, 34, 45, 56, 67, 78, 89, 90};
diff --git a/TP4/E2.c b/TP4/E2.c
index f7db4b2..98911fe 100644
--- a/TP4/E2.c
+++ b/TP4/E2.c
@@ -2,7 +2,6 @@
 
 #include <stdlib.h>
 #include <stdio.h>
-#include <math.h>
 
 int main(int argc, char *argv[]) {
     int X = 0, n, *P1, *P2;
diff --git a/TP4/E3.c b/TP4/E3.c
new file mode 100644
index 0000000..c218179
--- /dev/null
+++ b/TP4/E3.c
@@ -0,0 +1,24 @@
+/* Inversion de tableau */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int main(int argc, char *argv[]) {
+
+    int T[] = {12, 23, 34, 45, 56, 67, 78, 89, 90};
+    int *P1, *P2, temp, n = sizeof(T)/sizeof(int);
+
+    P2 = T + n - 1;
+    for (P1 = T; P1 < T + n/2; P1++, P2--) {
+        temp = *P1;
+        *P1 = *P2;
+        *P2 = temp;
+    }
+
+    for (P1 = T; P1 < T + n; P1++) {
+        printf("%d, ", *P1);
+    }
+    printf("\n");
+
+    return 0;
+}