C++ - Logical or: ||

Logical OR works as follows: just in case it's the result false if both inputs are false, in all other cases the result is true. In next table you can find all possibilities:

a	b	x
False	False	False
False	True	True
True	False	True
True	True	True

information about the table: a, b are inputs, x is result

||

Description

par1 || par2

Used keywords: ||

Input

par1 - Logical value
par2 - Logical value

Output

Result - Logical value

If the first operand is true, then the second operand is not evaluated.

Compatible programing languages:
Visual C++ .NET

Examples

C++

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 || false; // a1 = false
a2 = false || true;  // a2 = true
a3 = true  || false; // a3 = true
a4 = true  || true;  // a4 = true

C++

Even one example in what situations we can use the operation logical or:

(b || c) || a
a || true
a>1 || a<100

C++

Other pieces of example codes:

(10 >a || a<5)

a || true

j > 128 || false

You can find it in the following collections: logical operators

Logical or in another programming language:

Differences to: