Compilare: user.cpp: In constructor ‘graf::graf(const char*)’: user.cpp:29:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned i=1; i <= iNodes; i++) ^ user.cpp:31:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned i=0; i < iEdges; i++) ^ user.cpp: In member function ‘void graf::prim()’: user.cpp:52:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned i = 1; i < iNodes; i++) //Adaugarea toturor nodurilor ^ user.cpp:56:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned j = 1; j <= iNodes; j++) ^ user.cpp:60:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned k = 1; k <= iNodes; k++) ^ user.cpp:77:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned i = 1; i < iNodes; i++) ^ user.cpp:72:22: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] parc[2*i] = y; ^ user.cpp:71:24: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] parc[2*i-1] = x; ^