Compilare: main.c: In function 'main': main.c:17:16: warning: unused variable 'nr' [-Wunused-variable] int t, n, k, nr; ^~ main.c:19:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &t); ^~~~~~~~~~~~~~~~~~~~~ main.c:24:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &k); ^~~~~~~~~~~~~~~~~~~~~~~~~~~