// 1- Method takes a value and prints what's inside .

import 'dart:io';

int? num1 = int.parse(stdin.readLineSync()!); int? num2 = int.parse(stdin.readLineSync()!);

main() { print("Enter tow numbers for sumation it : "); print("First Number : "); num1; print("Second Number : "); num2;

sum(num1, num2); }

void sum(num1, num2) { print(num1 + num2); }

// 2- Method only prints .

List names = ["osama", "Faisal", "Fahad", "Turki"];

main() { printinfo(); }

void printinfo() { for (var name in names) { print(name); } }

// 3- Method takes a value and returns a value:

import 'dart:io';

int? length = int.parse(stdin.readLineSync()!); int? width = int.parse(stdin.readLineSync()!);

main() { print("Enter Length and Width for calculate the area ...");

var area = calcArea(); print("Area is ${area}"); }

calcArea() { print("Enter length :"); length; print("Enter width :"); width; return (length! * width!); }