correction code

AnimalProcessing/Proficiencies/dup.c

@@ -25,19 +25,29 @@ int duper(char **argv, char *output){
     int wstatus;
     pid_t pid = fork();
 
-    if(pid < 0) return 1;
+    if(pid < 0) {
+
+        printf("Something went wrong in duper.\n");
+        return 1; 
+    }
 
     //Child
     else if (pid == 0){
 
         // ouverture en mode write 
         FILE *file = fopen(output, "w");
-        if(!file) exit(-1);
-
+        if(!file) {
+            printf("Something went wrong in duper.\n");
+            exit(-1);
+        }
         
         int fno = fileno(file);
-        if(dup2(fno, STDOUT_FILENO) == -1) exit(-1);
-        
+        if(dup2(fno, STDOUT_FILENO) == -1){
+            
+            printf("Something went wrong in duper.\n");
+            exit(-1);
+         }
+
         fclose(file);
 
         execvp(argv[0],argv);