More Problems

• Write a program to calculate the area of a circle given its radius.
• Write a program to check if a string is a valid credit card number.
• Write a program to implement a basic to-do list application using file I/O.
• Write a program to find the number of distinct elements in an array.
• Write a program to calculate the sum of the elements in a 2D array.
• Write a program to convert a hexadecimal string to its integer value.
• Write a program to check if a number is a strong number.
• Write a program to calculate the number of vowels in a paragraph.