Borderou de evaluare (job #7914)

Compilare: user.cpp: In function ‘int main()’: user.cpp:6:24: warning: unused variable ‘s1’ [-Wunused-variable] user.cpp:6:29: warning: unused variable ‘nr3’ [-Wunused-variable] user.cpp:6:43: warning: unused variable ‘p’ [-Wunused-variable] user.cpp:6:47: warning: variable ‘t1’ set but not used [-Wunused-but-set-variable] user.cpp:4:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:5:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]