Write a C program to manage $50$ bank accounts. The accounts are identified by numbers ranging from $100$ to $149$ as integer values. For instance, Account number $100$ corresponds to the data stored in index $0,$ and account number $111$ corresponds to the data stored in index $11.$ Therefore, when a user provides an account number, your program should include a function that returns the index where that account is stored.

The program can handle various transactions and will be implemented as a menu driven program. You will use an array to store information for the $50$ accounts. Initially, this array of accounts will be initialized to $-1,$ where $-1$ signifies that the account is not yet open. The following table presents the questions that the program will ask the user. Each response to a transaction$-$type question should be a single character. If the user provides an illegal character, the program should display an error message. All amounts are in dollars and can have up to $2$ decimal places. Note: Use the interest formula below for your interest calculation :

balance $+=$ balance $*$ interestRate $/100$