Day 4 version3.swift

import SwiftUI

struct ContentView: View {
    @State var count: Int = 0
    @State var txt: String = "Label:"
    var body: some View {
        VStack {
            Label(self.txt, systemImage: /*@START_MENU_TOKEN@*/"42.circle"/*@END_MENU_TOKEN@*/)
            HStack {
                Button(action: {
                    self.count = self.count + 1
                    self.txt = "count: \(self.count)"
                    print("count: \(self.count)")
                    
                }
                ) {
                    Text("button")
                        .fontWeight(.heavy)
                }
                Text("Hello, world!")
                    .font(.headline)
                    .foregroundColor(Color.blue)
                    .multilineTextAlignment(.center)
                    .padding()
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}