Compilare: user.cpp: In function ‘int main()’: user.cpp:47:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(ok>2) ^ user.cpp:59:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(ok>2) ^ user.cpp:72:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(ok>2) ^ user.cpp:87:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(ok>2) ^ user.cpp:99:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(ok>2) ^ user.cpp:112:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(ok>2) ^ user.cpp:9:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("banda1.in", "r", stdin); ^ user.cpp:10:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("banda1.out", "w", stdout); ^ user.cpp:11:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:14:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &ra); ^