Initial data commit

Task/Arithmetic-Integer/LIL/arithmetic-integer.lil

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+# Arithmetic/Integer, in LIL
+write "Enter two numbers separated by space: "
+if {[canread]} {set line [readline]}
+print
+
+set a [index $line 0]
+set b [index $line 1]
+print "A is $a"", B is $b"
+print "Sum               A + B is [expr $a + $b]"
+print "Difference        A - B is [expr $a - $b]"
+print "Product           A * B is [expr $a * $b]"
+print "Integer Quotient  A \\ B is [expr $a \ $b], truncates toward zero"
+print "Remainder         A % B is [expr $a % $b], sign follows first operand"
+print "LIL has no exponentiation expression operator"