Compilare: user.cpp: In function ‘int main()’: user.cpp:11:8: warning: unused variable ‘nr’ [-Wunused-variable] int k,nr,j,i; ^ user.cpp:18:25: warning: array subscript is above array bounds [-Warray-bounds] while (a[1][j]!=0&&a[2][j]!=x) ^ user.cpp:22:7: warning: array subscript is above array bounds [-Warray-bounds] a[2][j]=x; ^ user.cpp:35:24: warning: array subscript is above array bounds [-Warray-bounds] fprintf (g,"%ld",a[2][i]); ^