The / or slash is used in a Pascal program to perform division. The results are a real value. If you want integer type value then use the div operator, round or trunc function .
A := 3 / 4;
returns 0.75 if a is real (if a is integer-type then get error:Incompatible types).
The value on the right side of the slash must not be zero, or a division by zero error occurs. This can be caught through use of a try .. finally or try .. except block.
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