Compilare: user.cpp: In function ‘int calcsuma(int, int, int)’: user.cpp:28:14: warning: unused variable ‘j’ [-Wunused-variable] int su,i,j; ^ user.cpp: In function ‘int main()’: user.cpp:41:15: warning: unused variable ‘n2’ [-Wunused-variable] int i,j,k,n2,su,sumin,y,x,sutot; ^ user.cpp:41:27: warning: variable ‘y’ set but not used [-Wunused-but-set-variable] int i,j,k,n2,su,sumin,y,x,sutot; ^ user.cpp:41:29: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int i,j,k,n2,su,sumin,y,x,sutot; ^