Borderou de evaluare (job #250983)

Compilare: user.cpp: In function ‘int main()’: user.cpp:27:13: warning: unused variable ‘l’ [-Wunused-variable] user.cpp:8:16: warning: unused variable ‘nr’ [-Wunused-variable] user.cpp:24:9: warning: unused variable ‘u’ [-Wunused-variable] user.cpp:9:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]