Ajout exo 2 TP6

TP6/Exo2/max.c

@@ -0,0 +1,74 @@
+#include <unistd.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+struct numbers
+{
+    int n1;
+    int n2;
+    int max;
+};
+
+typedef struct numbers numbers;
+
+void *max(void *n)
+{
+    numbers *comp = (numbers *)n;
+    if (comp->n1 > comp->n2)
+        comp->max = comp->n1;
+    else
+        comp->max = comp->n2;
+}
+
+int main(int argc, char **argv)
+{
+    if (argc != 9)
+    {
+        printf("Usage : %s <n1> <n2> <n3> <n4> <n5> <n6> <n7> <n8>\n", argv[0]);
+        return EXIT_FAILURE;
+    }
+
+    pthread_t threads[4];
+    numbers duels[4];
+
+    for (int i = 0; i < 4; i++)
+    {
+        duels[i].n1 = (int)strtod(argv[2 * i + 1], NULL);
+        duels[i].n2 = (int)strtod(argv[2 * (i + 1)], NULL);
+        duels[i].max = 0;
+        pthread_create(&threads[i], NULL, max, (void *)(duels + i));
+    }
+
+    for (int i = 0; i < 4; i++)
+    {
+        pthread_join(threads[i], NULL);
+    }
+
+    numbers demi_f[2];
+
+    for (int i = 0; i < 2; i++)
+    {
+        demi_f[i].n1 = duels[i * 2].max;
+        demi_f[i].n2 = duels[i * 2 + 1].max;
+        demi_f[i].max = 0;
+        pthread_create(&threads[i], NULL, max, (void *)(demi_f + i));
+    }
+
+    for (int i = 0; i < 2; i++)
+    {
+        pthread_join(threads[i], NULL);
+    }
+
+    numbers finale = {};
+    finale.n1 = demi_f[0].max;
+    finale.n2 = demi_f[1].max;
+
+    pthread_create(&threads[0], NULL, max, (void *)(&finale));
+    pthread_join(threads[0], NULL);
+
+    printf("Le plus grand des huits nombres est : %d\n", finale.max);
+
+    return EXIT_SUCCESS;
+}