Pascal - logical and: and

logical and works as follows: just in case it's true if both inputs are true in all other situations the result is false. In next table you can find all possibilities:
abx
FalseFalseFalse
FalseTrueFalse
TrueFalse False
True True True
information about the table: a, b are inputs, x is result

and

Description

par1 and par2
Used keywords: and

Input


Output

if the first operand is false, then the second operand is not evaluated.
compatible programing languages:
Object Pascal | Free Pascal

Examples

Pascal

in the source code you can find the equivalent of the above table, for easier orientation at the end of each line is a comment which shows the result.
a1 := false and false; { a1 = false}
a2 := false and true; { a2 = false}
a3 := true and false; { a3 = false}
a4 := true and true;  { a4 = true}

Pascal

even one example in what situations we can use the operation logical and:
a and b
a and true
10 >a and a>5

Pascal

Other pieces of example codes:
a and b
not b and true
b2:= x and y;

you can find it in the following collections: logical operators
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