Off topic:Extracting column value from csv file according to if else and & operator

Question

[shawin]

I have a csv file and I would like to extract the value of it with specific range for the last column for example; F>2 & F<2 & P=1, and then write the result to csv file.

The data is:

x1         x2         x3         x4         x5         x6
9.488404   9.470895   9.282434   9.366707   9.955383   9.640816
8.63063    8.558311   8.788391   8.576231   8.671588   8.84298
9.354749   9.367669   9.259953   9.421538   9.554635   9.603745
9.944864   9.950428   10.19102   10.07351   10.0327    10.13079
Fc         p
1.037883   0.320095
1.057708   0.060132
1.065191   0.111192

I tried the code bellow but , it does not work?

FCPval <- read.csv("C:/Users/shawin/Desktop/RProgramms/RAdipose/FCPval.csv")
c=as.data.frame(FCPval)
for (i in 1:rowN){if (C$F[i] >= 2 && C$F[i]<=-2&& C$p[i]<=3){
  dfrmPFC=data.frame(Fc=FC,p=p)}
}

The error is:

Error in C$FC : object of type 'closure' is not subsettable.

Can I extract the value according to the condition?