Compilare: user.cpp: In function ‘double poligon(point*, int)’: user.cpp:42:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<=d.size()-3;i++) { ^ user.cpp:48:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<=d.size()-2;i++) ^ user.cpp:29:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j=1,p; ^ user.cpp: In function ‘int main()’: user.cpp:64:11: warning: unused variable ‘m1’ [-Wunused-variable] int m,m1,k,k1; ^ user.cpp:64:16: warning: unused variable ‘k1’ [-Wunused-variable] int m,m1,k,k1; ^ user.cpp:57:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("gradina.in","r",stdin); ^ user.cpp:58:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("gradina.out","w",stdout); ^ user.cpp:59:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:61:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&v[i].x,&v[i].y); ^