double_pipe.c

AnimalProcessing/Proficiencies/dup.c

@@ -20,11 +20,12 @@ int duper(char **argv, char *output){
 
     //int fd[2];
     //pipe(fd);
-
+    if(!argv || !*argv || !output) return 1;
+    
     int wstatus;
     pid_t pid = fork();
 
-    if(pid < 0) return -1;
+    if(pid < 0) return 1;
 
     //Child
     else if (pid == 0){