String sort code

#1

https://ide.geeksforgeeks.org/qodOmnz45i
https://online.codingblocks.com/app/player/127473/content/109889/4738/code-challenge
why is the code not running

#2

Check your code with the given sample output. It is not giving the expected output.
For this question you can make an array of strings and then sort it according to the condition that if there is a prefix match between two string, sort in decreasing order of length. Use C++ inbuilt sort function with a custom comparator something like this:

bool mycompare( string a, string b)
{
int l1=a.length();int l2=b.length();int flag=-1;
for(int i=0;i<min(l1,l2);i++){
if(a[i]!=b[i])
flag=0;
}
if(flag==-1) // means there is a prefix match
return l1>l2; // so sort decreasing order of length
else
return a<b; //sorting in normal dictionary order when no prefix match
}