More Problems

• Write a program to find the maximum product of two integers in an array.
• Write a program to implement a simple library system with book borrowing.
• Write a program to calculate the number of digits in a given number.
• Write a program to find the sum of all digits of a number using recursion.
• Write a program to check if a number is a perfect square using a function.
• Write a program to implement a simple game of Tic-Tac-Toe with a graphical interface.
• Write a program to find the minimum and maximum elements in a list using pointers.
• Write a program to convert a hexadecimal number to decimal using a function.