Mine

// Readability, probably introduced a bug or two, did not test it :)void remove_dup(char target[], char other[]){	int out_index = 0;		for(int i = 0; target[i] != '\0'; ++i)	{		if(!is_dup(target[i], other))			target[out_index++] = target[i];		}	target[out_index] = '\0';}bool is_dup(char targetChar, char other[]){		for(int j = 0; other[j] != '\0'; ++j)			if(target[i] == other[j])				return true;		  return false;	  }