Compilare: main.cpp: In function 'void dijkstra(int)': main.cpp:15:26: warning: variable 'nr' set but not used [-Wunused-but-set-variable] int i,nod,vecin,cost,nr; ^~ main.cpp: In function 'int main()': main.cpp:62:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&n,&m); ^ main.cpp:64:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d%d",&x,&y,&z); ^