Compilare: user.cpp: In function ‘void dynamic()’: user.cpp:73:9: warning: variable ‘dv’ set but not used [-Wunused-but-set-variable] int dv; ^ user.cpp: In function ‘void readFile()’: user.cpp:26:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:30:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]); ^