COBOL
Track deposits and withdrawals, maintain balance, prevent overdraft....
banking
transaction
validation
COBOL
Validate credit card number using Luhn algorithm. Check: 16 digits, valid checksum, identify card type (Visa/Master/Amex)....
validation
luhn
credit-card
algorithm
COBOL
Calculate: days between two dates, find day of week for any date....
date
functions
calculation
COBOL
Calculate Equated Monthly Installment (EMI) for a loan....
loan
emi
finance
amortization
COBOL
Calculate gross pay, deductions, and net pay. Regular hours up to 40, overtime at 1.5x....
payroll
business
calculation
COBOL
Read employee file, calculate tax based on salary slabs, generate formatted salary report. Tax Slabs: 0-25000: 0%, 25001-50000: 10%, 50001-100000: 20%...
payroll
report
tax
evaluate
COBOL
Track product inventory: add stock, sell items, show low stock alerts (below 10 units), generate inventory report....
inventory
tables
business
menu
COBOL
Simulate ATM: PIN verification (3 attempts), check balance, withdraw (multiples of 100, max 20000), deposit, mini statement (last 5 transactions)....
atm
banking
security
transactions
COBOL
Generate itemized bill: multiple items with quantity and price, apply discount if total > 1000, add GST 18%, print formatted bill....
billing
invoice
business
calculation
COBOL
Manage student records: add students, record marks for 5 subjects, calculate total/average/grade, show class topper....
grades
students
tables
business
COBOL
Process customer orders: validate customer ID, check product availability, calculate total, apply loyalty discount, update inventory....
order
ecommerce
business
validation
COBOL
Generate monthly bank statement: opening balance, all transactions, closing balance, interest calculation....
banking
statement
running-balance
interest
COBOL
Calculate insurance premium based on age, coverage amount, and risk factors....
insurance
premium
risk
calculation
COBOL
Track employee leave: apply leave, approve/reject, show balance, generate leave report....
leave
hr
employee
management
COBOL
Manage patient records: admit, discharge, view details, bill calculation....
hospital
patient
healthcare
billing
COBOL
Manage library: add books, issue, return, check availability, fine calculation....
library
books
management
fine