More Problems

• Write a program to calculate the area of a circle using a function.
• Write a program to check if a number is a perfect square using a function.
• Write a program to implement a simple grade calculator.
• Write a program to convert hours to seconds.
• Write a program to check if a string is a valid integer using strtol.
• Write a program to find the longest word that is not a palindrome in a string.
• Write a program to calculate the distance between two geographical coordinates.
• Write a program to implement a basic online library system.