Compilare: user.cpp: In function ‘int main()’: user.cpp:19:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<strlen(v); j++) ^ user.cpp:36:23: warning: ‘yy’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(xx!=x1 || yy!=y1) ^ user.cpp:36:13: warning: ‘xx’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(xx!=x1 || yy!=y1) ^ user.cpp:36:23: warning: ‘y1’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(xx!=x1 || yy!=y1) ^ user.cpp:36:13: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(xx!=x1 || yy!=y1) ^