These Rosetta Code examples don't compile with 0.17.0

[jzakiya]

I'm really new to Nim and started playing around with 0.17.0 on Linux.

I went to Rosetta Code: 
[https://rosettacode.org/wiki/Category:Nim](https://rosettacode.org/wiki/Category:Nim)
 to get code examples to run.

The following code examples wouldn't compile with: $ nim -d:release c <file.nim>

montecarlo.nim 
    
    
    import math
    randomize()
    
    proc pi(nthrows): float =
      var inside = 0
      for i in 1..int64(nthrows):
        if hypot(random(1.0), random(1.0)) < 1:
          inc inside
      return float(4 * inside) / nthrows
    
    for n in [10e4, 10e6, 10e7, 10e8]:
      echo pi(n)
    

rootsofunity.nim 
    
    
    import complex, math
    
    proc rect(r, phi: float): Complex = (r * cos(phi), sin(phi))
    
    proc croots(n): seq[Complex] =
      result = @[]
      if n <= 0: return
      for k in 0 .. < n:
        result.add rect(1, 2 * k.float * Pi / n.float)
    
    for nr in 2..10:
      echo nr, " ", croots(nr)
    

How do you make these examples work with 0.17?