Borderou de evaluare (job #215680)

Compilare: user.cpp: In function ‘int main()’: user.cpp:7:37: warning: unused variable ‘sa’ [-Wunused-variable] user.cpp:7:42: warning: unused variable ‘sn’ [-Wunused-variable] user.cpp:5:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:6:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]