Compilare: user.cpp: In member function ‘void graph::distance()’: user.cpp:72: warning: unused variable ‘min’ user.cpp:72: warning: unused variable ‘dis’ user.cpp: In function ‘int main()’: user.cpp:120: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:121: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:125: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result