PASCAL: AN INTRODUCTION

ARITHMETIC STATEMENTS
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.

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                                    _______________________________


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