Compilare: main.c: In function 'query': main.c:25:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &k, &x); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c: In function 'main': main.c:46:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &n, &t); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:52:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i]); ^~~~~~~~~~~~~~~~~~~~~~~