斯坦福大学开放课程——编程方法 作业2 - 4

4.

   In high-school geometry, you learned the Pythagorean theorem for the relationship of the lengths of the three sides of a right triangle:  a² + b² = c² which can alternatively be written as: c = sqrt(a² + b² ) .

   Most of this expression contains simple operators covered in Chapter 3. The one piece that’s missing is taking square roots, which you can do by calling the standard function Math.sqrt. For example, the statement

double y = Math.sqrt(x);

sets y to the square root of x.

   Write a ConsoleProgram that accepts values for a and b as ints and then calculates the solution of c as a double. Your program should be able to duplicate the following sample run:

 

呵呵，这题很简单，相信大家都知道如何处理，直接附上源代码

 

程序源代码：

/* * File: PythagoreanTheorem.java * Name: * Section Leader: * ----------------------------- * This file is the starter file for the PythagoreanTheorem problem. */ import acm.program.*; public class PythagoreanTheorem extends ConsoleProgram { public void run() { /* You fill this in */ println("Enter values to computer Pythagorean theorem."); int a = readInt("a: "); int b = readInt("b: "); double c = Math.sqrt(a*a + b*b); println("c = " + c); } }