坐标转换：Polar to Cartesian，polarcartesian,def c2p put

坐标转换：Polar to Cartesian，polarcartesian,def c2p put

def c2p  puts "Enter x"  x=gets.chomp  x=x.to_f  puts "Enter y"  y=gets.chomp  y=y.to_f  r=Math.sqrt((x**2)+(y**2))  t=Math.atan(y/x)  deg=(180*t)/3.14  puts "The coordinate in polar system is ("+r.to_s+","+deg.to_s+")"enddef p2c  puts "Enter r"  r=gets.chomp  r=r.to_f  puts "Enter angle in degree"  t=gets.chomp  t=t.to_f  x=r*Math.cos((t*3.14)/180)  y=r*Math.sin((t*3.14)/180)  puts "The coordinate in the cartesian system is ("+x.to_s+","+y.to_s+")"end//该片段来自于http://byrx.net