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Since I am new to C++, I do not know what the expression means?

and how can i co-relate this expression with C language.

                           #include <bits/stdc++.h>
                           using namespace std;
                           int main()
                           {

                              // string to be converted to lowercase
                              string s = "GEEKSFORGEEKS";

                              for (auto& x : s) {
                          x = tolower(x);
                              }

                                cout << s;
                                return 0;
                             }
Jasmeet Singh
  • 101
  • 3
  • Read [Range-based for-loop](https://en.cppreference.com/w/cpp/language/range-for). – Ivan Venkov Feb 05 '23 at 08:55
  • C++ has derived so much from C that you shouldn't treat these two related. – justANewb stands with Ukraine Feb 05 '23 at 09:13
  • See [Why should I not #include ?](https://stackoverflow.com/q/31816095) and [Why using namespace std is bad practice](https://stackoverflow.com/questions/1452721). – prapin Feb 05 '23 at 09:16
  • `#include ` Where ever you learned that, block that site in your web browser, never go to that web site again, forget you ever learned it, and get yourself a [good C++ book](https://stackoverflow.com/a/388282/4641116). – Eljay Feb 05 '23 at 15:26

0 Answers0