Compilare: user.c: In function ‘main’: user.c:45:15: warning: unused variable ‘fout’ [-Wunused-variable] FILE *fout = fopen("bfs.out", "w"); ^ user.c:48:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d", &numberOfNodes, &numberOfEdges, &sourceNode); ^ user.c:52:23: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &node1, &node2); ^