Compilare: main.c: In function 'kel': main.c:41:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.c: In function 'main': main.c:51:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d", &n, &k); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:52:31: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] for (int i = 1; i <= n; i++) fscanf(f, "%d", &arr[i]); ^~~~~~~~~~~~~~~~~~~~~~~~