More Problems

• Write a program to find the total number of digits in a string.
• Write a program to implement a basic online quiz application with feedback.
• Write a program to check if a number is a perfect power.
• Write a program to find the sum of elements in a 2D array.
• Write a program to convert a string to an integer without using atoi.
• Write a program to implement a simple e-commerce shopping cart.
• Write a program to check if a string is a valid MAC address.
• Write a program to find the maximum even number in an array.