Logical Operators

Last Updated: Jan 2026

Logical operators are used to combine or invert conditions — they return true or false depending on logic results.

🗂 List of Logical Operators

Operator	Name	Description	Example	Result
&&	AND	Returns true if all conditions are true	(5 > 2) && (10 > 5)	true
\|\|	OR	Returns true if any one condition is true	(3 > 5) \|\| (10 > 7)	true
!	NOT	Reverses the result (true → false, false → true)	!(5 > 2)	false

✏ Mini Example

int a = 10;
int b = 5;
int c = 7;

printf("%d\n", (a > b) && (a > c)); // true  (both true)
printf("%d\n", (a > b) || (a < c)); // true  (one is true)
printf("%d\n", !(a > b)); // false (reverse)

💡 Quick Practice

Check if both conditions x > 5 and y < 10 are true.
Print "Welcome" if userName exists, using &&.
Use || to set a default name when user input is empty.
Exercises Set

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