Exercise questions - Strings

1. Input string and find length
2. Convert into lower/upper case
3. Reverse the string
4. Copy string
5. Append string

Solve the following program, using string function

1. Input 'ANKIT'
   Output:
   A
   AN
   ANK
   ANKI
   ANKIT
2. Input two strings and swap.

Solution: C

3. Input string and find it is palindrome or not.

Solution: C

4. Input string and count number of vowels.

Solution: C PHP

5. Input string and count blank spaces, characters and words.
6. Trim all the spaces in between the sentence.

Solution: C

7. Replace 2 or more blank spaces with a single blank space.

Solution: C

8. Input main string and a sub-string, WAP to find a sub-string from a main string.
9. Input username and password and check username as 'admin' and password as 'admin123', username is not case-sensitive, but password is case-sensitive. If input is valid, give message welcome admin, otherwise display invalid.