Getting Segmentation fault. Please resolve it

#1

Segmentation fault is coming in findAllString method

#2

code link is not correct
this is not code of digital dictionary

check the link

#3
#4

Code link is correct

#5

yeha code link is correct
may be it’s my mistake sorry

one thing you forgot is to add
for(int i=0;i<256;i++)freq[i]=NULL; this in construction

node(int d){
		data=d;
		end=false;
        for(int i=0;i<256;i++)freq[i]=NULL;
	}