R version 2.15.3 (2013-03-01) -- "Security Blanket"
Copyright (C) 2013 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i686-pc-linux-gnu (32-bit)

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> par4 = '26'
> par3 = 'ac112d0832171b2877f63c669bf3d303'
> par2 = 'wnga'
> par1 = '119215010_0.0675312294624746_Wed May 22 10:28:43 2013'
> par4 <- '26'
> par3 <- 'ac112d0832171b2877f63c669bf3d303'
> par2 <- 'wnga'
> par1 <- '119215010_0.0675312294624746_Wed May 22 10:28:43 2013'
> #'GNU S' R Code compiled by R2WASP v. 1.2.291 ()
> #Author: aston2
> #To cite this work: I. Holliday, 2012, MC Mock Q11 (v1.0.2) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/Ian.Holliday/rwasp_mcq201011.wasp/
> #Source of accompanying publication: 
> #
> library(digest)
> par4 <- as.numeric(par4)
> if(exists('par2')) {
+ if (par2 != 'wnga') {
+ if (digest(par2,ser=F) == par3) {
+ par4 = par4 + 4
+ }
+ if (digest(par2,ser=F) != par3) {
+ par4 = par4 - 2
+ }
+ }
+ if (par2 == 'wnga') {
+ }
+ }
NULL
> 
> #Note: the /var/fisher/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/fisher/rcomp/createtable")
> 
> a<-table.start()
> a<-table.row.start(a)
> a<-table.element(a,'This is the end of the MC exam. <b><i>Please, write the hash code on your exam paper.</b></i>',2,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Hash Code',1,TRUE)
> a<-table.element(a,digest(paste(par1,'_',par4,sep=''),ser=F))
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.end(a)
> table.save(a,file="/var/fisher/rcomp/tmp/1re0v1369233723.tab") 
> 
> 
> 
> proc.time()
   user  system elapsed 
  0.287   0.078   0.342