Compilare: main.c: In function 'main': main.c:46:19: warning: format '%lld' expects argument of type 'long long int', but argument 3 has type 'long int' [-Wformat=] fprintf(fout,"%lld",(long)(s-si)); ^ main.c:19:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%ld",&n); ^~~~~~~~~~~~~~~~~~~~ main.c:20:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lf",&si); ^~~~~~~~~~~~~~~~~~~~~ main.c:26:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lf",&tday); ^~~~~~~~~~~~~~~~~~~~~~~ main.c:29:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lf",&tmor); ^~~~~~~~~~~~~~~~~~~~~~~