Compilare: user.cpp: In function ‘void read()’: user.cpp:19: warning: format ‘%d’ expects type ‘int*’, but argument 2 has type ‘long int*’ user.cpp:21: warning: format ‘%d’ expects type ‘int*’, but argument 2 has type ‘long int*’ user.cpp:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int lee(int, int)’: user.cpp:35: warning: unused variable ‘ok’ user.cpp:63: warning: no return statement in function returning non-void user.cpp: In function ‘int main()’: user.cpp:76: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long int’ user.cpp:76: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long int’ user.cpp:76: warning: format ‘%d’ expects type ‘int’, but argument 4 has type ‘long int’ user.cpp:67: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:68: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result