package com.example.tipcalculator import android.os.Bundle import android.widget.Space import androidx.activity.ComponentActivity import androidx.activity.compose.setContent import androidx.activity.enableEdgeToEdge import androidx.compose.foundation.layout.Arrangement import androidx.compose.foundation.layout.Column import androidx.compose.foundation.layout.Spacer import androidx.compose.foundation.layout.fillMaxSize import androidx.compose.foundation.layout.height import androidx.compose.foundation.layout.padding import androidx.compose.material3.Button import androidx.compose.material3.Scaffold import androidx.compose.material3.Text import androidx.compose.material3.TextField import androidx.compose.runtime.Composable import androidx.compose.runtime.getValue import androidx.compose.runtime.mutableStateOf import androidx.compose.runtime.remember import androidx.compose.runtime.setValue import androidx.compose.ui.Alignment import androidx.compose.ui.Modifier import androidx.compose.ui.tooling.preview.Preview import androidx.compose.ui.unit.dp import androidx.compose.ui.unit.sp import com.example.tipcalculator.ui.theme.TipCalculatorTheme class MainActivity : ComponentActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) enableEdgeToEdge() setContent { TipCalculatorTheme { calc() } } } @Composable fun calc(){ var totalbill by remember { mutableStateOf("0") } var tip by remember { mutableStateOf("0") } var ans by remember { mutableStateOf(0.0) } Column( modifier = Modifier.fillMaxSize().padding(16.dp), horizontalAlignment = Alignment.CenterHorizontally, verticalArrangement = Arrangement.Center ) { TextField( value = totalbill, onValueChange = { totalbill = it }, label = { Text(text = "Enter bill amount:") } ) Spacer(modifier = Modifier.height(16.dp)) TextField( value = tip, onValueChange = { tip = it }, label = { Text(text = "Enter tip percentage:") } ) Spacer(modifier = Modifier.height(16.dp)) Button(onClick = { val bill = totalbill.toDouble() val t = tip.toDouble() ans=bill * (t / 100) }) { Text(text = "Calculate Tip Amount") } Spacer(modifier = Modifier.height(16.dp)) Text( text = "The tip amount is $ans", fontSize = 24.sp ) } } }
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