Compilare: user.cpp: In function ‘int main()’: user.cpp:41: warning: format ‘%d’ expects type ‘int’, but argument 4 has type ‘long long int’ user.cpp:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:32: warning: ‘poz’ may be used uninitialized in this function