Wrong output it is showing

#1

Here it is printing the same string…
Does it because i am using string instead of character array …what is the difference …

#2

you dont need to go through recursion to solve this problem you can simply iterate the string and print 3.14 whenever you encounter pi, It is generally not a good idea to append and move elements to the given string as it is error prone and increases the time complexity.
Code

#3

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