ν”„λ‘œμ„ΈμŠ€ μ£Όμ†Œ 곡간과 κΈ°μ–΅ 클래슀

2020. 4. 23. 14:33Β·πŸ“ Computer Science/✏ OS

1. ν”„λ‘œμ„ΈμŠ€ μ£Όμ†Œ 곡간

ν”„λ‘œκ·Έλž¨μ΄ CPUμ—μ„œ λͺ…령을 μˆ˜ν–‰ν•˜λ €λ©΄ μˆ˜ν–‰ν•˜λ €λŠ” μ£Όμ†Œ μ˜μ—­μ΄ λ©”λͺ¨λ¦¬μ— μ˜¬λΌκ°€ μžˆμ–΄μ•Ό ν•˜λŠ”λ° μ΄ μ£Όμ†Œ μ˜μ—­μ€ 크게 μŠ€νƒ, νž™, 데이터, μ½”λ“œ μ˜μ—­μœΌλ‘œ κ΅¬λΆ„λœλ‹€.

 

  • μŠ€νƒ: ν•¨μˆ˜μ˜ λ§€κ°œλ³€μˆ˜, 볡귀 μ£Όμ†Œμ™€ μ§€μ—­ λ³€μˆ˜ 같은 μž„μ‹œ 자료λ₯Ό μ €μž₯ν•˜λŠ” λΆ€λΆ„
  • νž™: ν”„λ‘œκ·Έλž¨ μ‹€ν–‰ 쀑에 λ™μ μœΌλ‘œ ν• λ‹Ήλ˜λŠ” λ³€μˆ˜λ₯Ό μ €μž₯ν•˜λŠ” λΆ€λΆ„
  • 데이터: μ „μ—­ λ³€μˆ˜, 정적 λ³€μˆ˜ λ“± ν”„λ‘œκ·Έλž¨μ΄ μ‚¬μš©ν•˜λŠ” 데이터λ₯Ό μ €μž₯ν•˜λŠ” λΆ€λΆ„
  • μ½”λ“œ: μž‘μ„±ν•œ ν”„λ‘œκ·Έλž¨ ν•¨μˆ˜λ“€μ˜ μ½”λ“œκ°€ 기계어 λͺ…λ ΉμœΌλ‘œ λ³€ν™˜λ˜μ–΄ μ €μž₯된 λΆ€λΆ„

 

ν”„λ‘œκ·Έλž¨ μ£Όμ†Œ 곡간

 

2. κΈ°μ–΅ 클래슀(Storage Class)

λ³€μˆ˜ μ„ μ–Έ μ‹œ λ©”λͺ¨λ¦¬ 내에 λ³€μˆ˜ 값을 μ €μž₯ν•˜κΈ° μœ„ν•œ κΈ°μ–΅ μ˜μ—­μ΄ ν• λ‹Ήλ˜λŠ”λ° ν• λ‹Ήλ˜λŠ” κΈ°μ–΅ μ˜μ—­μ— 따라 μ‚¬μš© λ²”μœ„μ— μ œν•œμ΄ μžˆλ‹€. μ΄λŸ¬ν•œ κΈ°μ–΅ μ˜μ—­μ„ κ²°μ •ν•˜λŠ” μž‘μ—…μ„ κΈ°μ–΅ 클래슀라 ν•œλ‹€.

 

  • μžλ™ λ³€μˆ˜(Automatic variable): ν•¨μˆ˜λ‚˜ μ½”λ“œμ˜ λ²”μœ„λ₯Ό ν•œμ •ν•˜λŠ” 블둝 λ‚΄μ—μ„œ μ„ μ–Έλ˜λŠ” λ³€μˆ˜
  • λ ˆμ§€μŠ€ν„° λ³€μˆ˜(Register variable): λ ˆμ§€μŠ€ν„°μ— κΈ°μ–΅ μ˜μ—­μ„ ν• λ‹Ήλ°›λŠ” λ³€μˆ˜λ‘œ 처리 속도λ₯Ό 높이기 μœ„ν•΄ μ‚¬μš©
  • 정적 λ³€μˆ˜(Static variable): ν•¨μˆ˜λ‚˜ 블둝이 μ’…λ£Œλœ 뒀에도 값이 μ†Œλ©Έλ˜μ§€ μ•ŠλŠ”λ‹€.
  • μ™ΈλΆ€ λ³€μˆ˜(External variable): ν˜„μž¬ νŒŒμΌμ΄λ‚˜ λ‹€λ₯Έ νŒŒμΌμ—μ„œ μ„ μ–Έλœ λ³€μˆ˜λ‚˜ ν•¨μˆ˜λ₯Ό μ°Έκ³ ν•˜κΈ° μœ„ν•œ λ³€μˆ˜

 

κΈ°μ–΅ 클래슀

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