Compilare: main.c: In function 'main': main.c:41:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &num_q); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:43:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a); ^~~~~~~~~~~~~~~~~~~~~ main.c:48:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &task); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:51:7: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &a, &b); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:54:7: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &a, &b); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:57:7: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lld", &aLL); ^~~~~~~~~~~~~~~~~~~~~~~~~