"if the amount requested is less than the account balance, that amount should be withdrawn; otherwise, the customer should be notified and no money should be withdrawn."
Problem solving sequence:
1.Algorithm
2.Pseudo-code
3.C code
Comparison
 Example (Step 1)
Automated teller machine.
A customer makes a request for a certain amount of cash, and your responsibility is to determine if they should be allowed to withdraw that amount.
You are undoubtedly familiar with equality operators, even if you don't know it. An equality operator is one that tests a condition such as "is less than", "is greater than", and "is equal to". You will find it useful to be able to compare two numbers using expressions like "x is less than y".