Compilare: main.c: In function 'main': main.c:156:8: warning: unused variable 'fout' [-Wunused-variable] FILE *fout = fopen("sortare.out", "w"); ^~~~ main.c:159:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &N, &M); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:163:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &v1, &v2); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c: In function 'removeEdge': main.c:58:13: warning: 'prev' may be used uninitialized in this function [-Wmaybe-uninitialized] prev->next = cur->next; ~~~~~~~~~~~^~~~~~~~~~~