The following symbols represent the arithmetic operators, ie, use them when you wish to perform calculations.

	+   Addition

	-   Subtraction

	*   Multiplication

	/   Division

Addition Example
 

	program Add (output);

	var number1, number2, result : integer;

	begin

		number1 := 10;

		number2 := 20;

		result := number1 + number2;

		writeln(number1, " plus ", number2, " is ", result )

	end.

Subtraction Example
 

	program Subtract (output);

	var number1, number2, result : integer;

	begin

		number1 := 15;

		number2 := 2;

		result := number1 - number2;

		writeln(number1, " minus ", number2, " is ", result )

	end.

Multiplication Example
 

	program Multiply (output);

	var number1, number2, result : integer;

	begin

		number1 := 10;

		number2 := 20;

		result := number1 * number2;

		writeln(number1, " multiplied by ", number2, " is ", result )

	end.

Division Example
 

	program Divide (output);

	var number1, number2, result : integer;

	begin

		number1 := 20;

		number2 := 10;

		result := number1 / number2;

		writeln(number1, " divided by ", number2, " is ", result )

	end.

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SELF TEST
The following program contains a few errors. Identify each error (there are seven), and show the correct version on the right.

	progam TEST (output)                   _______________________________

	var    number1, number2; integer;      _______________________________

	begin;                                 _______________________________
	       number1 = 24;                   _______________________________
	       number2 := number1 * 4;         _______________________________
	       writeln('Help )                 _______________________________
	end      

Answers

The following program contains a few errors. Identify each error (there are seven), and show the correct version on the right. 


	progam TEST (output)

	var    number1, number2; integer;

	begin;

	       number1 = 24;

	       number2 := number1 * 4;

	       writeln('Help )

	end                                    

	program TEST (output);

	var    number1, number2 : integer;

	begin

	       number1 := 24;

	       number2 := number1 * 4;

	       writeln('Help' )

	end.