Borderou de evaluare (job #369854)

Compilare: user.cpp: In function ‘int main()’: user.cpp:32:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:33:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:35:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘int eval(char*)’: user.cpp:30:11: warning: control reaches end of non-void function [-Wreturn-type]