More Problems

• 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.
• Write a program to find the longest word in a file.
• Write a program to implement a simple email client.
• Write a program to check if a string contains any digits.
• Write a program to find the sum of digits in a floating-point number.