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Direct Variable Access

Direct Variable Access

ธŠคํ„Šค €ˆ˜˜ ฐ’„ –ด–ปฒŒ –ป–ด˜คณ  –ด–ปฒŒ …‹ํŒ…ํ•ดŠ”€?

ดˆธฐํ™”ฒ˜Ÿ €ˆ˜—  ‘ํ•˜Š” ฐฉฒ•„ ํฐ ดŠˆ ค‘ ํ•˜‚˜˜€‹ค. ดฒƒ—„ ‘€€ ฐฉฒ•ด žˆŠ”ฐ, —ญ‹œ ํŒจํ„˜ กดžฌ ดœ ฒ˜Ÿ, ํ•˜‚˜Š” œ —ฐ„, ˜ ‹คฅธ ํ•˜‚˜Š” €…„ด‹ค. ฒซฒˆงธ ฐฉฒ•€ ชจ“  €ˆ˜ ง ‘  ‘ํ•˜Š” ฒƒด‹ค. ‹คฅธ ํ•˜‚˜Š”, ํ•ญƒ ฉ”„€ ณด‚ดŠ” ฒƒด‹ค.(setter,getter ‚ฌšฉํ•œ‹ค.)

Šคชฐํ† ํฌ „˜—„œŠ” IndirectVariableAccess „ ํ˜ธํ–ˆ‹ค. ทธŸฌ‹ค€ „ํŠธ•„ €”จ€ DirectVariableAccess จ ณดณ Š” ทธฒƒ˜ €…„— †€ž‹ค.

•„ž˜Š” ํ•œฒˆ ณดณ  'Œ. ฉ”„€ x ณด‚ดŠ”ตฐ' ํ•˜ณ  ž  ƒฐํ•ด• ํ•˜€งŒ,
~cpp 
...getX()...
•„ž˜Š” 'Œ. ทธƒฅ xตฌ‚˜.' ํ•  ˆ˜ žˆ‹คŠ” ฒƒด‹ค.
~cpp 
..,x...

™€“œ •„ €”จ˜ งกœŠ”, 'ํดž˜Šค— •„  € –‘˜ ฉ”†Œ“œงŒ กดžฌํ•œ‹คฉด, getter/setter ถ”€ํ•˜Š” ฒƒงŒœกœ„ ฉ”†Œ“œ˜ ˆ˜€ ‘ฐฐ€ ˜–ด„ฆฐ‹ค. ดŠ”  „ํ˜€ ‚ฌšฉ˜€ •Š„ œ —ฐ„„ œ„ํ•ด “ธฐ—†ด ˆ˜ Š˜ฆฐ ฒƒด‹ค.' ณ  ํ•œ‹ค.

ํ•˜€งŒ ด ํดž˜Šค€ ƒ†ด   €Šฅ„ด žˆ‹คฉด, setter/getter ˜ค„ด”ฉ ํ•ด„œ ‚ฌšฉํ• ˆ˜ žˆœ€กœ, IndirectVariableAccess “ฐŠ” ฒƒด ดœฐฎ‹ค.

€ˆ˜— ง ‘  ‘ํ•˜.

~cpp 
void Point::setXnY(int xNumber, int yNumber)
{
	x = xNumber;
	y = yNumber;
}
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