Why in my code string is not showing in the output?

#1
#2

You have to make a recursive function which prints out all the possible combinations. And store the strings in a 2D character array as follows -
char m[][10] = {" ", “abc”, “def”, “ghi”, “jkl” , “mno”, “pqrs” , “tuv”, “wx”, “yz”};

#3

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