More Problems

• Write a program to check if a given string is a valid IPv4 address.
• Write a program to find the longest word in a text file.
• Write a program to calculate the number of vowels in a given file.
• Write a program to implement a basic grade calculator with letter grades.
• Write a program to check if a number is a perfect number using its divisors.
• Write a program to find the smallest element in a linked list.
• Write a program to convert a character to its ASCII value.
• Write a program to check if two numbers are amicable numbers.