Compilare: main.cpp: In function 'int main()': main.cpp:111:11: warning: unused variable 'j' [-Wunused-variable] 111 | int i,j,k,l,q,u,v,a,b,op,z; | ^ main.cpp:111:13: warning: unused variable 'k' [-Wunused-variable] 111 | int i,j,k,l,q,u,v,a,b,op,z; | ^ main.cpp:111:30: warning: unused variable 'z' [-Wunused-variable] 111 | int i,j,k,l,q,u,v,a,b,op,z; | ^