Compilare: user.cpp:37: warning: this decimal constant is unsigned only in ISO C90 user.cpp: In function ‘void read()’: user.cpp:16: warning: format ‘%ld’ expects type ‘long int*’, but argument 6 has type ‘long long int*’ user.cpp:18: warning: format ‘%ld’ expects type ‘long int*’, but argument 6 has type ‘long long int*’ user.cpp:20: warning: format ‘%ld’ expects type ‘long int*’, but argument 6 has type ‘long long int*’ user.cpp:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:90: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:91: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:93: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result