Compilare: user.c: In function ‘main’: user.c:24:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &n); ^ user.c:26:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d", &p, &nod); ^ user.c:33:12: warning: ‘root’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[root]=1; ^ user.c:59:12: warning: ‘nrmax2’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fo,"%d", d[nrmax2]); ^ user.c:50:13: warning: ‘nrmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] d[nrmax]=1; ^