Compilare: main.cpp: In function 'void dijkstra()': main.cpp:16:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j=1;j<=n;j++) ^~~ main.cpp:20:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' viz[index]=1; ^~~ main.cpp:20:15: warning: 'index' may be used uninitialized in this function [-Wmaybe-uninitialized] viz[index]=1; ~~~~~~~~~~^~