Compilare: user.cpp: In function ‘int main()’: user.cpp:18:9: warning: unused variable ‘a’ [-Wunused-variable] int a,b,c,n,i,j,k,x,y,d,poz,xn,yn,ma; ^ user.cpp:18:11: warning: unused variable ‘b’ [-Wunused-variable] int a,b,c,n,i,j,k,x,y,d,poz,xn,yn,ma; ^ user.cpp:18:13: warning: unused variable ‘c’ [-Wunused-variable] int a,b,c,n,i,j,k,x,y,d,poz,xn,yn,ma; ^ user.cpp:18:19: warning: unused variable ‘j’ [-Wunused-variable] int a,b,c,n,i,j,k,x,y,d,poz,xn,yn,ma; ^ user.cpp:18:21: warning: unused variable ‘k’ [-Wunused-variable] int a,b,c,n,i,j,k,x,y,d,poz,xn,yn,ma; ^