Regarding stl doubts

#1

here why we hve taken n = sizof arr/ that whole line…

#2

Hey so

sizeof(X) ’

This will return size of X in bytes
So if we pass an array ,this will give : no of elements*(size of data type of array)
=n*4 for int array
Now when we divide it by sizeof(int) i.e 4
it will give n
I hope this resolves your doubt :slight_smile:
If it does then please mark it as resolved :slight_smile:
Also please mark as resolved previous doubt if resolved :slight_smile:

#3

we have to take this n necessary in these ?

#4

No u can take any variablename ,n is u can say conventional :slight_smile:

#5

here IT is not declared error is coming why we have taken auto it ?

#6

share ur code…

#7

it is running but not in my compiler ,anyways i want to know what is the work of auto keyword here

#8

Auto automatically detects the data type
Auto it=5 here it will become int
Auto it =“sri”
Here it will become string etc