Just another update

Task/Variables/AWK/variables-1.awk

@@ -1,2 +1,20 @@
-a = 1               # Here we declare a numeric variable
-fruit = "banana"    # Here we declare a string datatype
+BEGIN {
+# Variables are dynamically typecast, and do not need declaration prior to use:
+  fruit = "banana"    # create a variable, and fill it with a string
+  a = 1               # create a variable, and fill it with a numeric value
+  a = "apple"         # re-use the above variable for a string
+  print a, fruit
+
+# Multiple assignments are possible from within a single statement:
+  x = y = z = 3
+  print "x,y,z:", x,y,z
+
+# "dynamically typecast" means the content of a variable is used
+# as needed by the current operation, e.g. for a calculation:
+  a = "1"
+  b = "2banana"
+  c = "3*4"
+
+  print "a,b,c=",a,b,c,  "c+0=", c+0, 0+c
+  print "a+b=", a+b, "b+c=", b+c
+}