Project 4: ATM Simulator

Simulate a Simple ATM

Combine loops, conditionals, and variables to build a working ATM that lets users check their balance, deposit money, and withdraw — safely.

YOUR TASK

Write a C program that:

Starts with a balance of 0
Shows a menu: Check Balance, Deposit, Withdraw, Exit
Loops until the user picks Exit (option 4)
Rejects withdrawals that exceed the current balance
Prints the updated balance after each operation

Need a hint?

Step-by-step:
1. Start: float balance = 0;
2. Use a while(1) loop to keep showing the menu
3. Read int choice; with scanf("%d", &choice);
4. Use if/else if (or switch) on the choice
5. For withdraw: if (amount > balance) printf("Insufficient funds\n");
6. For exit: use break; to leave the loop
7. Print balance with printf("Balance: %.2f\n", balance);

Example (input: 2 100 3 200 1 4):

1. Check Balance
2. Deposit
3. Withdraw
4. Exit
Choose: 2
Amount: 100
Balance: 100.00
Choose: 3
Amount: 200
Insufficient funds
Choose: 1
Balance: 100.00
Choose: 4

Language:

Input:

Code Editor Ready

Output

Console

Console initialized...
Ready for Project 4: ATM Simulator

> Use "Check My Code" to validate your logic
> Complete button unlocks when all tests pass!