More Problems

• Write a program to read a string and print its length without using the strlen function.
• Write a program to calculate the number of bits needed to represent an integer.
• Write a program to print the squares of numbers from 1 to n.
• Write a program to find the sum of all prime numbers up to n.
• Write a program to implement a simple number guessing game with feedback.
• Write a program to check if a string is a valid email address (basic validation).
• Write a program to find the minimum element in a 2D array.
• Write a program to implement a simple text-based calendar.