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using System;
class HelloWorld {
static void test_sqrt()
{
//1
Console.Write("Please enter a number: ");
//string s = Console.ReadLine();
//int number = int.Parse(s);
int number = int.Parse(Console.ReadLine());
double result = Math.Sqrt(number);
Console.WriteLine("result=" + result);
}
static void test_sqrt1()
{
//1
Console.Write("Please enter a number: ");
int number = int.Parse(Console.ReadLine());
//double d = number * number * number;
double d = Math.Pow(number,3) +5;
Console.WriteLine("d=" + d);
double result = Math.Sqrt(d);
Console.WriteLine("result1=" + result);
}
static void test_sqrt2()
{
//1
Console.Write("Please enter a number: ");
int number = int.Parse(Console.ReadLine());
double result = Math.Abs(number);
Console.WriteLine("result2=" + result);
}
static void Main() {
Console.WriteLine("Hello World");
test_sqrt();
test_sqrt1();
test_sqrt2();
}
}