Compilare: user.c: In function ‘main’: user.c:80:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(infile, "%d %d", &n, &m); ^ user.c:87:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(infile, "%d %d", &u, &v); ^ user.c:82:8: warning: ‘list’ is used uninitialized in this function [-Wuninitialized] *list = malloc((n+1) * sizeof(struct node*)); ^