Compilare: user.cpp: In function ‘int main()’: user.cpp:26:8: warning: variable ‘fi’ set but not used [-Wunused-but-set-variable] FILE *fi, *g; ^ user.cpp:26:13: warning: variable ‘g’ set but not used [-Wunused-but-set-variable] FILE *fi, *g; ^ user.cpp:31:7: warning: unused variable ‘c’ [-Wunused-variable] char c; ^ user.cpp:33:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:35:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[0]); ^ user.cpp:39:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[j]); ^