Compilare: main.c: In function 'main': main.c:6:9: warning: unused variable 'ap' [-Wunused-variable] int ap[1000000]; ^~ main.c:12:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(pfi,"%d", &n); ^~~~~~~~~~~~~~~~~~~~ main.c:16:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(pfi,"%d", &elem); ^~~~~~~~~~~~~~~~~~~~~~~ main.c:31:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(pfi,"%d", &n); ^~~~~~~~~~~~~~~~~~~~ main.c:39:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(pfi,"%d", &elem); ^~~~~~~~~~~~~~~~~~~~~~~