Compilare: user.cpp: In function ‘void Citire()’: user.cpp:20:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&m); ^ user.cpp:22:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] { fscanf(f,"%d%d%d",&x,&y,&cost); ^ user.cpp: In function ‘void Dijskstra()’: user.cpp:39:16: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] viz[x]=1; ^