Compilare: user.cpp: In function ‘int main()’: user.cpp:51:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (l - 1 >= 1) ^ user.cpp:66:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (l + 1 <= nl) ^ user.cpp:81:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (c - 1 >= 1) ^ user.cpp:96:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (c + 1 <= nc) ^ user.cpp:112:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (l2 - 1 >= 1) ^ user.cpp:127:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (l2 + 1 <= nl) ^ user.cpp:142:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (c2 - 1 >= 1) ^ user.cpp:157:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (c2 + 1 <= nc) ^