More Problems

• Write a program to implement a simple inventory management system.
• Write a program to find the first duplicate character in a string.
• Write a program to check if a string is an isogram.
• Write a program to find the maximum frequency of any character in a string.
• Write a program to convert a temperature from Kelvin to Celsius.
• Write a program to check if a number is a pentagonal number.
• Write a program to implement a simple contact management system using arrays.
• Write a program to calculate the perimeter of a rectangle given its length and width.