Eroare de compilare: user.cpp:1:2: error: invalid preprocessing directive #includecstdio #includecstdio ^ user.cpp:2:2: error: invalid preprocessing directive #includemath #includemath.h ^ user.cpp:3:2: error: invalid preprocessing directive #includealgorithm #includealgorithm ^ user.cpp: In function ‘int comp(st, st)’: user.cpp:14:26: error: ‘atan2’ was not declared in this scope return (atan2(a.y,a.x)-atan2(b.y,b.x))eps; ^ user.cpp:4:13: error: expected ‘;’ before numeric constant #define eps 1.e-12 ^ user.cpp:14:43: note: in expansion of macro ‘eps’ return (atan2(a.y,a.x)-atan2(b.y,b.x))eps; ^ user.cpp:14:46: warning: statement has no effect [-Wunused-value] return (atan2(a.y,a.x)-atan2(b.y,b.x))eps; ^ user.cpp: In function ‘int main()’: user.cpp:18:13: error: ‘mission’ was not declared in this scope freopen(mission.in,r,stdin); ^ user.cpp:18:24: error: ‘r’ was not declared in this scope freopen(mission.in,r,stdin); ^ user.cpp:18:26: error: ‘stdin’ was not declared in this scope freopen(mission.in,r,stdin); ^ user.cpp:18:31: error: ‘freopen’ was not declared in this scope freopen(mission.in,r,stdin); ^ user.cpp:19:25: error: ‘w’ was not declared in this scope freopen(mission.out,w,stdout); ^ user.cpp:19:27: error: ‘stdout’ was not declared in this scope freopen(mission.out,w,stdout); ^ user.cpp:22:11: error: expected primary-expression before ‘%’ token scanf(%d,&n); ^ user.cpp:22:12: error: ‘d’ was not declared in this scope scanf(%d,&n); ^ user.cpp:22:16: error: ‘scanf’ was not declared in this scope scanf(%d,&n); ^