Compilare: user.cpp: In function ‘int main()’: user.cpp:15:25: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘bool*’ [-Wformat=] fscanf(f,"%d",&a); ^ user.cpp:11:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lu",&n); ^ user.cpp:15:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a); ^