Compilare: user.cpp: In function ‘int main()’: user.cpp:25:27: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[400]’ [-Wformat=] fscanf(f, "%s", &s); ^ user.cpp:22:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:25:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", &s); ^