Compilare: user.cpp:9:19: warning: integer constant is so large that it is unsigned user.cpp:9: warning: this decimal constant is unsigned only in ISO C90 user.cpp:9: warning: integer constant is too large for ‘long’ type user.cpp: In function ‘int main()’: user.cpp:38: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long long int’ user.cpp:10: warning: unused variable ‘t’ user.cpp:13: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:17: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result