Programs using Conditional Statements:
1. Write a program that takes an integer as input and determines whether it’s even or odd.
2. Create a program that checks if a given year is a leap year or not.
3. Develop a program that takes a student’s percentage as input and assigns a grade based on the following criteria:
90% and above: A
80% to 89%: B
70% to 79%: C
60% to 69%: D
Below 60%: F