If a=3, b=5 and c=6, find ab||c||(!b)(!c).

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Q. If a=3, b=5 and c=6, find a&&b||c||(!b)&&(!c).

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Concept understanding — Relational and Logical Operators in C

Relational and logical operators are used to test conditions, and their result is always either true (1) or false (0). Together they let a program make decisions.

Relational operators compare two operands:

< less than, > greater than, <= less than or equal, >= greater than or equal, == equal to, and != not equal to.

A crucial distinction is between = and ==: the single = is the assignment operator (it stores a value in a variable), while the double == is the relational equality operator (it tests whether two values are equal). Confusing the two is a classic beginner mistake.

Logical operators combine or invert conditions:

&& logical AND - true only if both conditions are true.
|| logical OR - true if at least one condition is true.
! logical NOT - reverses a condition (true becomes false). …

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[!TLDR]

The expression evaluates to 1 (true).

In C a non-zero value counts as true and zero as false. Here a=3, b=5, c=6 are all non-zero (true), so !b = 0 and !c = 0. Logical AND (&&) has higher precedence than logical OR (||), so the expression groups as:

(a \&\& b)\; ||\; c\; ||\; ((!b)\, \&\&\, (!c))

a && b = 1 (both true) …

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Q.If a=3, b=5 and c=6, find a&&b||c||(!b)&&(!c).

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