what is current capability of our banking system program / what we achived so far

1. Program can add accounts and their details. It can store all the informaiton in binary format.
2. It can perform transactions and print the net balance for the selected customer. And also inform about the account status.
3. It can search the any customer based on their customer ID.

I want you to create a function which can create 10 random transaction of any customer and store them. Also create function that cab able to read the last 10 transaction from the stored binary file and print the last 10 transactions of any customer. In C langauge

I have the code already but i can't attch it because it's too long

The code that i am attaching has already this function.

void input(); // Input the data of customer

void writefile(); // Write the data to file

void print_all(); // Print the data of custoomer

void add_accounts(); // add data of customer a

void search_customer(); // Search data of customer in the stored file

void last_transactions(); //print the last transaction

void print_balance(); // Print the balance of customer

void make_transaction(); // Add or remove money to account

void check_account_status(int n); // Check the account status if it has enough money