This sketch is created with an older version of Processing,
and doesn't work on browsers anymore.
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String lines[] = loadStrings("temps.txt");
println("there are " + lines.length + " lines");
for (int i=0; i < lines.length; i++)
{
int t = int(lines[i]);
int cel = (t-32)*5/9;
println(lines[i] + " degrees fahrenheit is " + cel + " degrees celsius.");
}