recursive concept

Author: VedRatan

stringsubset.cpp

@@ -0,0 +1,20 @@
+#include <bits/stdc++.h>
+using namespace std;
+void printsub(string str, string curr=" ", int index=0)
+{
+    if(index==str.length())
+    {
+        cout<<curr;
+        return;
+    }
+    printsub(str,curr,index+1);
+    printsub(str,curr+str[index],index+1);
+}
+int main()
+{
+ios::sync_with_stdio(false);
+cin.tie(0);
+    string s="ABC";
+    printsub(s);
+    return 0;
+}