Compilare: user.cpp: In function ‘int main()’: user.cpp:54:24: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(i==2&&j==1 || i==3&&j==2)m[i][j]==1; ^ user.cpp:54:52: warning: statement has no effect [-Wunused-value] if(i==2&&j==1 || i==3&&j==2)m[i][j]==1; ^ user.cpp:55:29: warning: statement has no effect [-Wunused-value] else m[i][j]==0; ^ user.cpp:62:29: warning: statement has no effect [-Wunused-value] else p[i][j]==0; ^ user.cpp:56:15: warning: array subscript is above array bounds [-Warray-bounds] m[1][3]=a; ^ user.cpp:57:15: warning: array subscript is above array bounds [-Warray-bounds] m[2][3]=b; ^ user.cpp:58:15: warning: array subscript is above array bounds [-Warray-bounds] m[3][3]=c; ^ user.cpp:58:12: warning: array subscript is above array bounds [-Warray-bounds] m[3][3]=c; ^