Compilare: user.c: In function ‘main’: user.c:111:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d\n", &n, &m); ^ user.c:119:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d\n", &a, &b, &c); ^ user.c:131:8: warning: ‘p’ is used uninitialized in this function [-Wuninitialized] insert(heap, 1, 0, &last, p); ^