Recursion subsequence

https://ide.codingblocks.com/s/170211 this code should print subsequence in reverse order but it is failing to do that

@Vivek-Pandey-2129725577345937 hey vivek just do subsequence(a,b,i+1,j+1);
First then subsequence(a,b,i+1,j);

but i have to print subsequence in reverse order this will print subsequence but i am supposed to include the null character at first place afterthat i have to print all the values lets say like this
“”, “d”, “c”, “cd”, “b”, “bd”, “bc”, “bcd”, “a”, “ad”, “ac”, “acd”, “ab”, “abd”, “abc”, “abcd”

@jaiskid check out my code

@Vivek-Pandey-2129725577345937 hey vivek see this recursive code

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