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Description

When the - operator has two operands of integral type or real type it performs subtraction, according to the following rules:

• If both operands are of integral type then integral subtraction is performed, and the result is a value of integral type.
• If one operand is of integral type and the other is of real type then the integral operand is converted into a real operand and real subtraction is performed, and the result is a value of real type.
• If both operands are of real type then real subtraction is performed, and the result is a value of real type.

Here are some examples using the - operator to perform subtraction:

   3 - 5      which results in the integer value -2
   3 - 5.0    which results in the real value -2.0
   3.0 - 5    which results in the real value -2.0
   3.0 - 5.0  which results in the real value -2.0

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