1.Input and print a string
Write a program to input a string from the user and print it.

2.Find the length of a string
Write a program to find the length of a string without using strlen().

3.Copy one string to another
Write a program to copy one string to another using a loop (do not use strcpy()).

4.Compare two strings
Write a program to compare two strings and print whether they are equal or not (without using strcmp()).

5.Count vowels, consonants, digits, and spaces in a string
Write a program to count how many vowels, consonants, digits, and white spaces are present in a string.

6.Convert string to uppercase and lowercase
Write a program to convert a string to uppercase and lowercase without using strupr() or strlwr().

7.Reverse a string
Write a program to reverse a string using a loop.

8.Check if a string is a palindrome
Write a program to check whether a string is a palindrome (same forward and backward).

9.Concatenate two strings
Write a program to concatenate two strings without using strcat().

10.Remove spaces from a string
Write a program to remove all spaces from a string.