Operators

Arithmetic operators

+ - / * %

Logical Operators

• && logical and
• || logical or
• ! logical not

String operators

• + may be used to concatenate string variables.

Comparison operators

< > == !=

Unary operators

++		--

The unary operators (increment and decrement) may only be used as standalone commands, eg

a++;

and may not be used within an expression.

Note on expression type.

The “type” of an expression is determined by the type of the value. Thus in the following examples:

1)		int a;
		a= b + c;
2)		float b;
		b= a+c;
3)		str c;
		c=a+b;

in case 1 the expression is evaluated in integers, in case 2 in floats and in case 3 in strings regardless of the type of the variables on the right of the expression.

Note that logical operators are not valid with floats and strings expressions only include string concatenation.

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