Did some stuff.

hw6/task1/src/main.rs

 
     let arguments: Vec<String> = args().collect();
 
+    const BUFFER_SIZE : usize = 256;
+
     if arguments.len() > 2 {
 
         let (reader, writer) = pipe().unwrap();
-        let msg = "hello from parent";
+        let numbers = arguments[1..].to_vec();
+
         let pid = fork();
         match pid {
             Ok(Child) => {
-                let mut read_buf = [0u8; 32];
+                let mut read_buf = [0u8; BUFFER_SIZE];
                 let bytes_read = read(reader, &mut read_buf).unwrap();
-                let msg_received = str::from_utf8(&read_buf[0..bytes_read]).unwrap();
-                println!("{} received from parent:{:?}", getpid(), msg_received);
+                let msg_received = str::from_utf8(&read_buf[0 .. bytes_read]).unwrap();
+
+
+                match sum_strings(split_into_strings(msg_received)) {
+                    Ok(res) => {
+                        println!("{}", res)
+                    },
+                    Err(_) => {},
+                }
+
+                //let result = sum_strings(numbers);
+
             }
 
             Ok(Parent { child }) => {
+                for s in numbers {
+                    write(writer, concatenate_strings(s, " ").as_bytes());
+                }
 
-                println!("sending to child with pid:{}", child);
-                write(writer, msg.as_bytes()).unwrap();
 
                 if let Ok(ws) = wait() {
                     if let WaitStatus::Exited(child_pid, exit_code) = ws {
         }
     }
     Ok(prod)
-}
+}