Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:32:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(!s[j] && dmin>d[j]) ^ user.cpp: In function ‘void cit()’: user.cpp:49:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.cpp:50:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&k); ^ user.cpp:59:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d",&i,&j); ^ user.cpp:64:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&l); ^ user.cpp:67:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d",&i,&j); ^ user.cpp: In function ‘void dijkstra()’: user.cpp:21:13: warning: ‘vfmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,vfmin,dmin; ^