Compilare: user.cpp: In function ‘int main()’: user.cpp:9:22: warning: format ‘%u’ expects argument of type ‘unsigned int*’, but argument 3 has type ‘long int*’ [-Wformat=] fscanf(f1,"%u",&t); ^ user.cpp:9:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%u",&t); ^ user.cpp:12:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%ld",&x); ^