Compilare: user.cpp: In function ‘int cit()’: user.cpp:18: warning: format ‘%ld’ expects type ‘long int*’, but argument 4 has type ‘long long int*’ user.cpp:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int verifica(int)’: user.cpp:48: warning: unused variable ‘act’ user.cpp:48: warning: unused variable ‘ok’ user.cpp: In function ‘int main()’: user.cpp:92: warning: unused variable ‘i’ user.cpp: In function ‘int cit()’: user.cpp:42: warning: control reaches end of non-void function