Compilare: user.c: In function ‘main’: user.c:87:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &P); ^ user.c:88:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &N, &M); ^ user.c:91:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &dmax[i]); ^ user.c:95:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d", &A, &B, &D); ^ user.c: In function ‘finddmin’: user.c:55:29: warning: ‘currnode’ may be used uninitialized in this function [-Wmaybe-uninitialized] int distto[N], visited[N], currnode, infinite, node; ^