Compilare: user.cpp: In function ‘int main()’: user.cpp:35:32: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(fout,"%d",a); ^ user.cpp:25:19: warning: unused variable ‘n’ [-Wunused-variable] long long int n; ^ user.cpp:26:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&p); ^