Compilare: user.cpp: In function ‘int main()’: user.cpp:79: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long int’ user.cpp:35: warning: unused variable ‘w’ user.cpp:35: warning: unused variable ‘q’ user.cpp:35: warning: unused variable ‘c’ user.cpp:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result