At 10:23 line number 8 why is he checking s!=NULL?

#1

At 10:23 line number 8 why is he checking s!=NULL and assigning input =s?

#2

hi @riagoel3999,
he is checking if the string is not empty then he assigns that to input (basically this is initialization)

#3

This will happen everytime function will get called?

#4

@riagoel3999 yes on every first call of a string

#5

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#6

Why are we point input to the first character everytime when we want the next character?

#7

coz its null initially

#8

But it is static so it will be null only once . in next function cal it wont be null and also s wont be null