Compilare: user.cpp: In function ‘void dynamics()’: user.cpp:54: warning: comparison between signed and unsigned integer expressions user.cpp:61: warning: comparison between signed and unsigned integer expressions user.cpp:51: warning: unused variable ‘t’ user.cpp:68: warning: unused variable ‘numb’ user.cpp: In function ‘void write()’: user.cpp:86: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long long unsigned int*’ user.cpp: In function ‘int main()’: user.cpp:92: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result