Assignment 2 · Tuition Estimator — Decisions & Validation

Modules 3–4 (L05–L08) · 40 marks · due end of Week 5 Outcomes: CLO-2, CLO-3 (PF-3.x, PF-4.x)

The bursary quotes a tuition estimate from credit hours and residence status. Your program reproduces their published table — exactly.

Fee table (authoritative)

Residency	Base	Per credit hour	Cap rule
`in`	1200	150	total capped at 4500
`out`	2500	320	total capped at 8000

total = min(base + credits·rate, cap). Scholarships: input scholarship amount (0 or more) is subtracted after the cap; the result never goes below 0.

Requirements

Read: residency word (in/out), credits (int), scholarship (double).
Validate: residency must be exactly in or out (else bad residency, exit 1); credits 1–24 (else bad credits, exit 1); scholarship ≥ 0 (else bad scholarship, exit 1). Check in that order, one message per run.
Print estimate: <total> with 2 decimals.

Sample runs

Input	Output
`in 12 0`	`estimate: 3000.00`
`out 20 500`	`estimate: 7500.00` (2500 + 20·320 = 8900 → cap 8000 → −500)
`in 30 0`	`bad credits`
`xx 10 0`	`bad residency`

Constraints

One switch or if/else ladder for residency — choose one and justify in a comment.
No loops yet; a single pass of decisions.
Money math in double is accepted here (exactness discussion is A1's postmortem topic).

Deliverables

tuition.cpp (course contract, zero warnings) · test_table.md covering both residencies, cap hit, scholarship floor at 0, every validation message, boundary credits 1/24/25 · postmortem.md (10 marks).

Notes

The cap applies before scholarship; the floor applies last.
Credits are whole hours; do not accept 12.5.