Eroare de compilare: main.cpp:6:8: error: 'struct' tag used in naming 'union wait' [-fpermissive] struct wait ^~~~ In file included from /usr/include/stdlib.h:42:0, from /usr/include/c++/6/cstdlib:75, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:47, from main.cpp:1: /usr/include/x86_64-linux-gnu/bits/waitstatus.h:66:7: note: 'union wait' was previously declared here union wait ^~~~ main.cpp:6:8: error: redefinition of 'union wait' struct wait ^~~~ In file included from /usr/include/stdlib.h:42:0, from /usr/include/c++/6/cstdlib:75, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:47, from main.cpp:1: /usr/include/x86_64-linux-gnu/bits/waitstatus.h:66:7: error: previous definition of 'union wait' union wait ^~~~ main.cpp: In member function 'bool compare::operator()(const wait&, const wait&)': main.cpp:16:12: error: 'const union wait' has no member named 'when' if ( a.when != b.when ) ^~~~ main.cpp:16:22: error: 'const union wait' has no member named 'when' if ( a.when != b.when ) ^~~~ main.cpp:17:18: error: 'const union wait' has no member named 'when' return !(a.when < b.when); ^~~~ main.cpp:17:27: error: 'const union wait' has no member named 'when' return !(a.when < b.when); ^~~~ main.cpp:18:16: error: 'const union wait' has no member named 'tarv' return !(a.tarv < b.tarv); ^~~~ main.cpp:18:25: error: 'const union wait' has no member named 'tarv' return !(a.tarv < b.tarv); ^~~~ main.cpp: In function 'int main()': main.cpp:47:39: error: 'union wait' has no member named 'tarv' if ( !comi.empty () && wh > cur.tarv ) ^~~~ main.cpp:58:16: error: 'union wait' has no member named 'when' if ( cur.when + ms[i] < cur.tarv ) ^~~~ main.cpp:58:35: error: 'union wait' has no member named 'tarv' if ( cur.when + ms[i] < cur.tarv ) ^~~~ main.cpp:60:22: error: 'union wait' has no member named 'when' Non zero exit status: 1