Compilare: main.cpp: In function 'double add(int, int, int, double)': main.cpp:21:40: warning: unused variable 'x3' [-Wunused-variable] double x1=rez[pz1].a,x2=rez[pz2].a,x3=v[pz3].a,y1=rez[pz1].b,y2=rez[pz2].b,y3=v[pz3].b; ^~ main.cpp:21:80: warning: unused variable 'y3' [-Wunused-variable] double x1=rez[pz1].a,x2=rez[pz2].a,x3=v[pz3].a,y1=rez[pz1].b,y2=rez[pz2].b,y3=v[pz3].b; ^~ main.cpp: In function 'int main()': main.cpp:42:13: warning: unused variable 'j' [-Wunused-variable] int n,i,j,k,rezz=0; ^