Compilare: user.cpp: In function ‘void dijkstra(int, int (&)[72][10002], int)’: user.cpp:31:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, minv, k, ok; ^ user.cpp: In function ‘int main()’: user.cpp:60:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d %d",&n,&m,&u,&x); ^ user.cpp:62:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&uni[i]); ^ user.cpp:68:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&x,&y); ^