Eroare de compilare: user.cpp:12:1: error: expected ‘,’ or ‘;’ before ‘struct’ struct interval ^~~~~~ user.cpp:16:1: error: ‘interval’ does not name a type interval a [ NR ] ; ^~~~~~~~ user.cpp:20:12: error: ‘interval’ was not declared in this scope bool cmp ( interval a , interval b ) ^~~~~~~~ user.cpp:20:25: error: ‘interval’ was not declared in this scope bool cmp ( interval a , interval b ) ^~~~~~~~ user.cpp:20:36: error: expression list treated as compound expression in initializer [-fpermissive] bool cmp ( interval a , interval b ) ^ user.cpp: In function ‘int main()’: user.cpp:31:47: error: ‘a’ was not declared in this scope for ( int i = 0 ; i < n ; ++ i ) f >> a [ i ].x >> a [ i ].y ; ^ user.cpp:32:12: error: ‘a’ was not declared in this scope sort ( a , a + n , cmp ) ; ^