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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. string mingleStrings(string s1, string s2, int index) {
  5. if (index >= s1.length()) {
  6. return "";
  7. } else {
  8. string mingled = "";
  9. mingled += s1[index];
  10. mingled += s2[index];
  11. mingled += mingleStrings(s1,s2,++index);
  12. return mingled;
  13. }
  14.  
  15. }
  16.  
  17. int main() {
  18. cout << mingleStrings("cat", "dog", 0) << endl;
  19. return 0;
  20. }
Success #stdin #stdout 0s 3416KB
stdin
Standard input is empty
stdout
cdaotg