Compilare: main.c: In function 'sortaret': main.c:40:12: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long int' [-Wformat=] printf("%d ", nod); ^ main.c:30:13: warning: unused variable 'k' [-Wunused-variable] long i, j, k, nod; ^ main.c: In function 'main': main.c:54:2: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("sortaret.in","r",stdin),freopen("sortaret.out","w",stdout),scanf("%d%d",&n,&m); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:54:35: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("sortaret.in","r",stdin),freopen("sortaret.out","w",stdout),scanf("%d%d",&n,&m); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:54:70: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("sortaret.in","r",stdin),freopen("sortaret.out","w",stdout),scanf("%d%d",&n,&m); ^~~~~~~~~~~~~~~~~~~ main.c:56:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b),nr[a]++; ^~~~~~~~~~~~~~~~~~~ main.c:60:2: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("sortaret.in","r",stdin),scanf("%d%d",&n,&m); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:60:35: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("sortaret.in","r",stdin),scanf("%d%d",&n,&m); ^~~~~~~~~~~~~~~~~~~ main.c:62:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^~~~~~~~~~~~~~~~~~~