Compilare: main.c: In function 'main': main.c:13:21: warning: format '%lld' expects argument of type 'long long int *', but argument 3 has type 'long int *' [-Wformat=] fscanf(fptr,"%lld", &num); ^ main.c:14:21: warning: format '%lld' expects argument of type 'long long int *', but argument 3 has type 'long int *' [-Wformat=] fscanf(fptr,"%lld", &num1); ^ main.c:19:28: warning: format '%lld' expects argument of type 'long long int', but argument 3 has type 'long int' [-Wformat=] fprintf(fptr1, "%lld", num + num1); ^ main.c:13:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fptr,"%lld", &num); ^~~~~~~~~~~~~~~~~~~~~~~~~ main.c:14:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fptr,"%lld", &num1); ^~~~~~~~~~~~~~~~~~~~~~~~~~