Compilare: user.cpp: In function ‘int main()’: user.cpp:8:13: warning: unused variable ‘x’ [-Wunused-variable] int t, n, x, ans; ^ user.cpp:10:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d\n", &t); ^ user.cpp:13:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%s\n", s); ^