Borderou de evaluare (job #116145)

Compilare: user.cpp: In function ‘void back()’: user.cpp:18:15: warning: unused variable ‘aux’ [-Wunused-variable] user.cpp:18:20: warning: unused variable ‘chg’ [-Wunused-variable] user.cpp: In function ‘int main()’: user.cpp:77:12: warning: unused variable ‘j’ [-Wunused-variable] user.cpp:76:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:80:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]