Compilare: user.cpp: In function ‘int main()’: user.cpp:23:30: warning: array subscript is above array bounds [-Warray-bounds] v[1]=2; v[2]=2;v[3]=2;v[4]=2; ^ user.cpp:81:29: warning: array subscript is above array bounds [-Warray-bounds] A4[i][j]=v[4]; ^ user.cpp:82:31: warning: array subscript is above array bounds [-Warray-bounds] A4[i][j-1]=v[4]; ^ user.cpp:85:20: warning: array subscript is above array bounds [-Warray-bounds] v[4]++; ^ user.cpp:90:13: warning: array subscript is above array bounds [-Warray-bounds] v[4]=v[4]-2; ^ user.cpp:90:8: warning: array subscript is above array bounds [-Warray-bounds] v[4]=v[4]-2; ^ cc1plus: warning: iteration 2u invokes undefined behavior [-Waggressive-loop-optimizations] user.cpp:91:5: note: containing loop for(int i=1;i<=4;i++) ^