Use the shell to create a script for inputting the length and width of a rectangle, and calculating the area and perimeter of the rectangle

#!/bin/bash

echo "Enter the length of the rectangle: "
read length

echo "Enter the width of the rectangle: "
read width

area=$(echo "$length * $width" | bc)
perimeter=$(echo "2 * ($length + $width)" | bc)

echo "The area of the rectangle is: $area"
echo "The perimeter of the rectangle is: $perimeter"

相关问题

Write a readable and writable program using Android's internal storage, and display it below after inputting text for reading and writing

Sure, here's a simple Android app that allows you to read and write text to the device's internal storage:

MainActivity.java:

import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;

public class MainActivity extends AppCompatActivity {

    EditText editText;
    TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        editText = findViewById(R.id.edit_text);
        textView = findViewById(R.id.text_view);

        loadText();
    }

    public void saveText(View view) {
        String text = editText.getText().toString();
        FileOutputStream outputStream;

        try {
            outputStream = openFileOutput("text_file", Context.MODE_PRIVATE);
            outputStream.write(text.getBytes());
            outputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void loadText() {
        FileInputStream inputStream;

        try {
            File file = new File(getFilesDir(), "text_file");
            if (file.exists()) {
                inputStream = openFileInput("text_file");
                InputStreamReader isr = new InputStreamReader(inputStream);
                BufferedReader br = new BufferedReader(isr);
                StringBuilder sb = new StringBuilder();
                String line;

                while ((line = br.readLine()) != null) {
                    sb.append(line).append("\n");
                }

                textView.setText(sb.toString());
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:orientation="vertical">

    <EditText
            android:id="@+id/edit_text"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

    <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Save"
            android:onClick="saveText"/>

    <TextView
            android:id="@+id/text_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>

</LinearLayout>

This app has an EditText for inputting text, a Button for saving the text, and a TextView for displaying the text that has been saved. When the "Save" button is clicked, the app writes the text to a file named "text_file" in the device's internal storage. When the app is started, it loads the text from the file if it exists and displays it in the TextView.

To run the app, you can create a new Android project in Android Studio and copy the code above into the appropriate files. Then you can run the app on an emulator or a physical Android device.

disp('Go through the process !')

Sure, I can explain the process to you. The ChitGPT is a conversational AI that was developed by CSDN, and it works similarly to the ChatGPT developed by OpenAI. However, ChitGPT is a separate project and is not affiliated with OpenAI in any way.

ChitGPT uses a machine learning model called a transformer to understand and generate text. This model is trained on a large corpus of text data, such as online articles or books, to learn patterns in language. Once the model is trained, it can be used to generate new text based on a given prompt or conversation.

When you interact with ChitGPT, it uses natural language processing techniques to understand your input and generate a response. It can be trained to understand and respond to a variety of different topics and subjects, making it a useful tool for a range of applications, from customer service to personal assistants.

Overall, the process of using ChitGPT involves inputting text and receiving a response generated by the machine learning model. With further development and training, ChitGPT and other conversational AI systems have the potential to become even more sophisticated and useful in the future.