Compilare: user.cpp: In function ‘int main()’: user.cpp:28:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a==a1) ^ user.cpp:35:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(b==b1) ^ user.cpp:47:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a==a1) ^ user.cpp:54:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(b==b1) ^ user.cpp:80:33: warning: statement has no effect [-Wunused-value] {l++;v[a][j]==-4;} ^ user.cpp:82:33: warning: statement has no effect [-Wunused-value] {l++;v[a][j]==-4;} ^ user.cpp:87:33: warning: statement has no effect [-Wunused-value] {l++;v[i][a]==-4;} ^ user.cpp:89:33: warning: statement has no effect [-Wunused-value] {l++;v[i][a]==-4;} ^