Compilare: main.cpp: In function 'int main()': main.cpp:11:27: warning: unused variable 'z' [-Wunused-variable] int n,l,i,j,a,p,k,o=0,z,y=0,q=0; ^ main.cpp:11:29: warning: unused variable 'y' [-Wunused-variable] int n,l,i,j,a,p,k,o=0,z,y=0,q=0; ^ main.cpp:11:33: warning: unused variable 'q' [-Wunused-variable] int n,l,i,j,a,p,k,o=0,z,y=0,q=0; ^