Compilare: user.cpp: In function ‘int main()’: user.cpp:8:15: warning: unused variable ‘r’ [-Wunused-variable] int n,i,j,r,m,p,n1,p1,c,ok=0,a,b; ^ user.cpp:8:19: warning: unused variable ‘p’ [-Wunused-variable] int n,i,j,r,m,p,n1,p1,c,ok=0,a,b; ^ user.cpp:8:24: warning: unused variable ‘p1’ [-Wunused-variable] int n,i,j,r,m,p,n1,p1,c,ok=0,a,b; ^ user.cpp:8:27: warning: unused variable ‘c’ [-Wunused-variable] int n,i,j,r,m,p,n1,p1,c,ok=0,a,b; ^