Borderou de evaluare (job #143466)

Compilare: user.cpp: In function ‘int main()’: user.cpp:22:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:19:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:20:18: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘long long int nr(char)’: user.cpp:8:1: warning: control reaches end of non-void function [-Wreturn-type]