Borderou de evaluare (job #18373)

Compilare: user.cpp: In function ‘int main()’: user.cpp:8:17: warning: variable ‘f’ set but not used [-Wunused-but-set-variable] user.cpp:11:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:16:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:28:6: warning: ‘s4’ may be used uninitialized in this function [-Wuninitialized]