<span style="color:#323232;">comment.c: In function ‘main’:
</span><span style="color:#323232;">comment.c:5:16: error: ‘best_friend’ undeclared (first use in this function)
</span><span style="color:#323232;"> 5 | printf(best_friend.name);
</span><span style="color:#323232;"> | ^~~~~~~~~~~
</span><span style="color:#323232;">comment.c:5:16: note: each undeclared identifier is reported only once for each function it appears in
</span>