packageymq.demo03;importandroid.app.Activity;importandroid.os.Bundle;importandroid.view.*;importandroid.widget.*;publicclassdemo03extendsActivity{/**Calledwhentheactivityisfirstcreated.*/Stringstr="";EditTextet;intc=0,flag=0;doubleb=0.0,g=0.0,f=0.0;Viewvi;publicbooleanonC