Redundant parenthesis doubt

#1


showing error

#2

hello @jindaldivish

image
u can execute these statement only when st is not empty.
so handle this case

#3

https://ide.codingblocks.com/s/280473 can you please help me with this code

#4

https://ide.codingblocks.com/s/280483 i made some changes please look why it is getting error;

#5

remove this if statement
image
check ur updated code.

#6

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