Eroare de compilare: user.cpp:13: error: ‘LL’ has not been declared user.cpp: In function ‘long long int calc(int, int)’: user.cpp:51: error: ‘LL’ was not declared in this scope user.cpp:51: error: expected ‘)’ before numeric constant user.cpp:56: error: expected ‘)’ before ‘a’ user.cpp: In function ‘int main()’: user.cpp:157: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:158: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:160: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:163: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:166: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:170: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result