Compilare: user.cpp: In function ‘int main()’: user.cpp:23:13: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (s[nr]==')') ^ user.cpp:42:13: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (s[nr]==']') ^ user.cpp:60:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (s[nr]=='}') ^ user.cpp:88:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (a[i]>=ma) ^