Sum all values in every column of a data.frame in R

Question

Given this data set:

  Name Height Weight
1 Mary     65    110
2 John     70    200
3 Jane     64    115

I\'d like to sum every qualifier c

Answer 1

For the sake of completion:

 apply(people[,-1], 2, function(x) sum(x))
#Height Weight 
#   199    425