double_pipe.c

AnimalProcessing/Proficiencies/double_pipe.c

@@ -14,56 +14,73 @@ ___( o)>
  Coic Coic
  */
 
-void clc(){
+int main(){
 
-    int n = 0;
+    //pipes
     int pipe1[2];
     int pipe2[2];  
+    if(pipe(pipe2) == -1) return 1;
+    if(pipe(pipe1) == -1) return 1;
+
     char buffer[2048];
-
-    if(pipe(pipe2) == -1) return;
-    if(pipe(pipe1) == -1) return;
-
-    fgets(buffer, 2047, stdin);
-    n = atoi(buffer);
-    pipe1[1] = n;
-
+    
     pid_t pid = fork();
 
-    if(pid < 0) return;
+    if(pid < 0) return 1;
     
     //Child
     if(pid == 0) {
 
-        while(1){
+        close(pipe1[1]);
+        close(pipe2[0]);
 
-            if(pipe1[0]){
-                pipe2[1] = n* n;
-                exit(0);
-            }
+        int n;
+
+        while(read(pipe1[0], &n, sizeof(int))){
+
+            int rslt = n * n;
+            write(pipe2[1], &rslt, sizeof(int));
         }
+
+        close(pipe1[0]);
+        close(pipe2[1]);
+        exit(0);
+        
     }
     
     //Teacher ? WTF what are you doing with my uncle ? Why do you have an eggplant in your right hand and a riding whip in your left hand ? WTF is going on here    
     else {
         
-        if(n == -1) {
-            close(pipe1[0]);
-            close(pipe2[1]);
-            return;} 
+        close(pipe1[0]);
+        close(pipe2[1]);
         
-        pipe1[1] = n;
+        int nbr = 0;
+        while(fgets(buffer, 2047, stdin)){
+
+            nbr = atoi(buffer);
+
+            if(nbr == -1) break;
+
+            write(pipe1[1], &nbr, sizeof(int));
+
+            int rslt; 
+            read(pipe2[0], &rslt, sizeof(int));
+            printf("The Oracle says the square is: %i\n", rslt);
+        }
         
+        close(pipe1[1]);
+        close(pipe2[0]);
+
         wait(NULL); //on attends le Child
         
-        printf("The Oracle says the square is: %i\n", pipe2[0]);
+        
     } 
 }
 
 
-int main() {
+//int main() {
 
-    clc();
+//    clc();
     
     /*
     //[0] -> lecture | [1]-> ecriture
@@ -105,4 +122,4 @@ int main() {
         
     }*/
 
-}
+//}