Borderou de evaluare (job #272385)

Compilare: user.cpp: In function ‘long long int cifre(int)’: user.cpp:14:15: warning: unused variable ‘r’ [-Wunused-variable] user.cpp:14:17: warning: unused variable ‘s’ [-Wunused-variable] user.cpp: In function ‘int main()’: user.cpp:36:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:37:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:40:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘long long int cifre(int)’: user.cpp:33:1: warning: control reaches end of non-void function [-Wreturn-type]