Compilare: user.cpp: In function ‘void read()’: user.cpp:6: warning: format ‘%ld’ expects type ‘long int*’, but argument 2 has type ‘int*’ user.cpp:6: warning: format ‘%ld’ expects type ‘long int*’, but argument 3 has type ‘int*’ user.cpp:6: warning: format ‘%ld’ expects type ‘long int*’, but argument 4 has type ‘int*’ user.cpp:6: warning: format ‘%ld’ expects type ‘long int*’, but argument 5 has type ‘int*’ user.cpp:6: warning: format ‘%ld’ expects type ‘long int*’, but argument 6 has type ‘int*’ user.cpp:5: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:6: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void write()’: user.cpp:32: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘int’ user.cpp:32: warning: format ‘%ld’ expects type ‘long int’, but argument 3 has type ‘int’ user.cpp:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result