Compilare: main.cpp: In function 'void functie(int)': main.cpp:23:13: warning: variable 'x' set but not used [-Wunused-but-set-variable] int j=i,x=v[i]*v[j],a,b; ^ main.cpp:23:25: warning: variable 'a' set but not used [-Wunused-but-set-variable] int j=i,x=v[i]*v[j],a,b; ^ main.cpp:23:27: warning: variable 'b' set but not used [-Wunused-but-set-variable] int j=i,x=v[i]*v[j],a,b; ^ main.cpp: In function 'int main()': main.cpp:73:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<=v.size()) ~^~~~~~~~~~