Compilare: user.cpp: In function ‘void sum(short int*, short int*, short int*)’: user.cpp:13:22: warning: argument to ‘sizeof’ in ‘void* memset(void*, int, size_t)’ call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess] memset(s,0,sizeof(s)); ^ user.cpp:11:9: warning: unused variable ‘la’ [-Wunused-variable] int la,lb,ls,i,j,c,r=0; ^ user.cpp:11:12: warning: unused variable ‘lb’ [-Wunused-variable] int la,lb,ls,i,j,c,r=0; ^ user.cpp:11:20: warning: unused variable ‘j’ [-Wunused-variable] int la,lb,ls,i,j,c,r=0; ^