Compilare: main.cpp: In function 'double aria()': main.cpp:31:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<v.size(); i++) ~^~~~~~~~~ main.cpp:40:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<v.size(); i++) ~^~~~~~~~~ main.cpp: In function 'void je(punct, punct, punct, punct)': main.cpp:55:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(a0.x==a1.x) ^