Add application file

app.py

@@ -1,7 +1,16 @@
 import gradio as gr
 
-def greet(name):
-    return "Hello " + name + "!!"
+def update(name):
+    return f"Welcome to Gradio, {name}!"
 
-iface = gr.Interface(fn=greet, inputs="text", outputs="text")
-iface.launch()
+demo = gr.Blocks()
+
+with demo:
+    gr.Markdown("Start typing below and then click **Run** to see the output.")
+    with gr.Row():
+        inp = gr.Textbox(placeholder="What is your name?")
+        out = gr.Textbox()
+    btn = gr.Button("Run")
+    btn.click(fn=update, inputs=inp, outputs=out)
+
+demo.launch()