[R] Data Checking

[Ko-Kang Kevin Wang]

Hi,

This is a simple question with if elseif....however I am having trouble
constructing the solution for some reason.

Suppose I have a data set with 3 variables, a, b and c say.  Let's say c
is the sum of a and b.  So:
  a  b  c
  1  2  3
  2  3  5
  3  4  7
  .  .  .
  .  .  .
  .  .  .

Suppose that I know there have been some data entry errors and I want to
check if ALL values in c is really the sum of a and b, and if not, print
out the whole line (i.e. all values of a, b and c in that row).

Any help on how I can write this if elseif block will be apprecaited!

Ko-Kang

------------------------------------------------------------------------------
Ko-Kang Kevin Wang
Postgraduate PGDipSci Student
Department of Statistics
University of Auckland
New Zealand

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