I want to print all elements of an array using loop in easy way in C++ but get an error

Question

Here is the code:

int myarray[3] = {10,20,30};
  for (int elem : myarray)
    cout << elem << '\n';

if I compile like this:

g++ test.cpp

I get an error

test.cpp:12:17: warning: range-based for loop is a C++11 extension [-Wc++11-extensions]
  for (int elem : myarray)
                ^
2 warnings generated.

This gave me no issues under C++11 and -Wall flag. You are not correctly using C++11. `g++ -Wall -g -std=c++11 your_file.cpp -o your_program` — dh4ze, Mar 29 '20 at 15:32
Related if not a duplicate: [https://stackoverflow.com/questions/45291142/what-is-a-c11-extension-wc11-extensions/45291997](https://stackoverflow.com/questions/45291142/what-is-a-c11-extension-wc11-extensions/45291997) — drescherjm, Mar 29 '20 at 15:35
It's `-std=c++11` for C++11 support, not `-Wc++11`. See my answer below. — Jesper Juhl, Mar 29 '20 at 15:43

score 0 · Accepted Answer · answered Mar 29 '20 at 15:36

0

g++ -Wall -g -std=c++11 your_file.cpp -o your_program

You are still not properly compiling under C++11.

answered Mar 29 '20 at 15:36

dh4ze

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edwinc · Answer 2 · 2020-03-29T20:03:32.393

-2

so add '-std=c++11' to your compiler command line arguments

edited Mar 29 '20 at 20:03

answered Mar 29 '20 at 15:31

edwinc

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Adding `-Wc++11` will not fix the problem. – Jesper Juhl Mar 29 '20 at 15:38
The correct option should be `-std=c++11` or better yet upgrade to a newer compiler where the default is c++11 or greater. – drescherjm Mar 29 '20 at 15:41

I want to print all elements of an array using loop in easy way in C++ but get an error

2 Answers2