More Problems

• Write a program to check if a number is a negative integer.
• Write a program to convert a given string to a character array.
• Write a program to implement a simple quiz application using structures.
• Write a program to find the factorial of a number without using recursion.
• Write a program to display the current date and time.
• Write a program to check if a string is a valid IPv4 address.
• Write a program to calculate the length of a string using pointers.
• Write a program to implement a simple countdown timer.