ajout

RecapThoseAnimals/Fundamentals/process/fork.c

@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
 
@@ -8,12 +9,44 @@
 
 int is_prime(size_t n)
 {
-    // TODO
-    return 0;
-}
 
+
+
+    int status;
+    pid_t pid = fork();
+    if(pid < 0) return -1;
+    //Child
+    if(pid == 0){
+        for(size_t i = 2; i < n; i ++){
+            if(n % i == 0 && i != n){
+                printf("Child speaking: my number %zu is not a prime number\n", n);
+                printf("We both say hi!\n");
+                exit(0);
+            }
+        }
+        printf("Child speaking: my number %zu is a prime number\n", n);  
+        printf("We both say hi!\n");
+        exit(1);
+    }
+    
+    //daddy milk
+    else{
+        if(waitpid(pid, &status, 0) == -1) return -1;
+
+        if(WIFEXITED(status)){
+            if(WEXITSTATUS(status) == 1) printf("Parent speaking: stop wasting my time of course %zu is a prime number\n", n);
+            else printf("Parent speaking: stop wasting my time of course %zu is not a prime number\n", n);
+        }
+        printf("We both say hi!\n");
+    }
+    
+
+
+    return WEXITSTATUS(status);
+}
+/*
 int salute(int num_guests, char *guests[])
 {
-    // TODO
+    
     return 0;
-}
+}*/