Compilare: main.cpp: In function 'double poligon(point*, int)': main.cpp:45:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<=d.size()-3;i++) { ~^~~~~~~~~~~~ main.cpp:51:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<=d.size()-2;i++) ~^~~~~~~~~~~~ main.cpp:32:11: warning: unused variable 'j' [-Wunused-variable] int i,j=1,p; ^ main.cpp: In function 'int main()': main.cpp:67:11: warning: unused variable 'm1' [-Wunused-variable] int m,m1,k,k1; ^~ main.cpp:67:16: warning: unused variable 'k1' [-Wunused-variable] int m,m1,k,k1; ^~