Compilare: user.cpp: In function ‘int main()’: user.cpp:49: warning: format ‘%d’ expects type ‘int*’, but argument 3 has type ‘long int*’ user.cpp:62: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long int’ user.cpp:49: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:53: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void dijkstra()’: user.cpp:22: warning: ‘nod’ may be used uninitialized in this function