being used. Also, variables are automatically initialized to zero. Here is an example computer program, in Basic, to average a list of numbers:10 INPUT "How many numbers to average?", A20 FOR I = 1 TO A30 INPUT "Enter number:", B40 LET C = C + B50 NEXT I60 LET D = C/A70 PRINT "The average is", D80 END

Once the mechanics of basic computer programming are learned, more sophisticated and powerful languages are available to build large computer systems.

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