Compilare: user.cpp: In function ‘int main()’: user.cpp:17:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(j>0 ) ^ user.cpp:24:24: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long int’ [-Wformat=] printf("%d",t[n][k]); ^