quantile for gamma distribution

General
3

Thank you so much for your clarification. I was trying to get the quantiles from a given gamma distribion using a vector of probabilites.
For example:

  shape=3.5
  scale=1.5
  x=c(2,5,100)
  pp=pgamma(x, shape=shape, scale=scale)
  
  qgamma(pp, shape=shape, scale=scale)

I was expecting ~100 instead of "InF" in the last line of the code.