Compilare: user.cpp: In function ‘int main()’: user.cpp:7: warning: unused variable ‘t’ user.cpp:7: warning: unused variable ‘k’ user.cpp:9: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:7: warning: ‘s’ may be used uninitialized in this function user.cpp:7: warning: ‘d’ may be used uninitialized in this function