Conditional Programs

Calculate letter grade (A, B, C, D, F) from percentage using conditional statements.

Check whether an alphabetic character is a vowel or a consonant.

Classify a single character as a digit, alphabet, or special character.

Check if a person is eligible to vote based on age (18 or older).

Check whether a given integer is divisible by both 5 and 11.

Check whether a given integer is an Armstrong (narcissistic) number.

Check whether a number is a perfect square.

Determine if three sides form a valid triangle and its type (equilateral, isosceles, scalene).

Check whether a number is a strong number (sum of factorials of digits).

Check whether a number is a perfect number (sum of proper divisors equals the number).

Check whether a number is automorphic (its square ends with the same digits).

Check whether a number is a Harshad (Niven) number (divisible by sum of its digits).

Check whether a number is abundant (sum of proper divisors is greater than the number).

Check whether two numbers form a friendly pair (same abundancy index).

Compare two floating-point numbers with a tolerance to avoid precision issues.

A simple text-based calculator using a menu and conditional logic.

Apply different discount slabs based on total bill amount.

Simulate a simple login system by comparing username and password with stored values.

Check if a password is strong based on length and character type rules.

Validate whether a string matches a basic email address pattern.