How can I read one line at a time with C shell in unix

Question

I try to make a small script, using c shell, that will take a file made of several lines, each containing a name and a number and sum all numbers that a have certain name. How can I put into a variable the next line each time?

the summig part I do by: (after I'll be able to get a full line to $line)

set line =($line)
@ sum = $sum + $line[2]

Answer 1

I found this discussion that might answer your question: http://www.linuxquestions.org/questions/programming-9/csh-while-read-738708/

Answer 2

I have managed to solve it using the next piece of code:

foreach line ("`grep $1 bank`")
    echo $line
    set line_break = ($line)
   @ sum = $sum +$line_break[2]
end
echo $1\'s balance id: $sum\$

Answer 3

Awk can be called from any shell:

% cat >test.dat
a 1
a 3
b 2
a 7
b 4
% awk '($1 == "a") { SUM += $2 } END { print SUM }' < test.dat
11