Compilare: user.cpp: In function ‘int main()’: user.cpp:11:11: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>>z+1; ^ user.cpp:12:11: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>>s+1; ^ user.cpp:13:19: warning: NULL used in arithmetic [-Wpointer-arith] for(j=2;z[j]!=NULL;j++) ^ user.cpp:23:23: warning: NULL used in arithmetic [-Wpointer-arith] for(int i=1;s[i]!=NULL;i++) ^