Segmentation Fault

#1

Getting segmentation fault, don’t know the reason.

#2

hello @rachitbansal2500
image
u have declared an empty size 2d vector.

correct syntax.

vector< vector< char > > arr (n, vector< char > (m) );

#3

Do we always have to do this while declaring a 2D vector?

#4

refer this for all ways of declaring 2d vector.
2d vector

1 Like
#5

@aman212yadav still getting the same error

#6

now the error is in ur rat function

#7

ur code is running in infinite loop.

ecaue now rat can move in all four direction it might happen that we visit same sate again n agin.
to avoid it check whether u have already visited ur current state or not. if it is visited (thats means u r running in a loop) . so return false to avoid loop.

consider this
from (i,j),
move down by 1
then move right by 1
then move up by 1
and then move left by 1.
after these moves u will again reach to same state.
now if u again proceed from that state then u will again take these same steps and this will keep happening again n again . and u will stuck in an infinite loop.

#8

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