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ÇϳªÀºÇà 227-910235-83607 |
¿¹±ÝÁÖ ÀÌ»ó±¹(¿î¿µÁø) |
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°ÁÂ, ÆÁ, Á¤º¸ ÀÔ´Ï´Ù. |
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[angel] Æ÷ÀÎÅÍ 1 |
Ÿ¶ôõ»ç
(±è¼ºÈÆ)
2014-12-13 ¿ÀÈÄ 7:26:45
Ä«Å×°í¸®:
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4486ȸ Á¶È¸
µî·ÏµÈ ÆÄÀÏÀÌ ¾ø½À´Ï´Ù.
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¾È³çÇϼ¼¿ä. Ÿ¶ôõ»ç ÀÔ´Ï´Ù.
³×À̹ö À¥Å÷ Áß¿¡ "µ§¸¶" ¶ó´Â ¸¸È¿¡ X, Y ÁÂÇ¥¸¦ ¾Ë¸é ¾îµð¿¡ ÀÖµçÁö ¹Ù²ãÄ¡±â ÇÒ ¼ö ÀÖ´Â ´É·ÂÀÌ ³ª¿É´Ï´Ù. Àá±ä »ç¹«½ÇÀÇ Àá±ä ±Ý°í ¾ÈÀÇ ¹Ú½º ¾ÈÀÇ ¹°°ÇÀ» ¹Ù²ãÄ¡±â Çصµ ¾î¶² ¡Á¶³ª ¾î¶² Áõ°Åµµ ¾ø½À´Ï´Ù.
Æ÷ÀÎÅÍ´Â ¾Ë°í ÀÖ´Â µ¥ÀÌÅÍÀÇ ÁÂÇ¥¸¦ ÀÌ¿ëÇØ µ¥ÀÌÅ͸¦ ¼öÁ¤ ÇÏ´Â °Í ÀÔ´Ï´Ù.
0. Æ÷ÀÎÅÍ
** C/C++ int* pNum; // integer pointer char* pText; // char pointer .. *pNum = 123456; *pText = 'C';
** Delphi pNum: ^integer; // integer pointer pText: ^Char; // char pointer ... pNum^ := 123456; pText^ := 'C';
1. µ¨ÆÄÀÌ¿Í Æ÷ÀÎÅÍ
µ¨ÆÄÀÌ¿¡¼± C/C++ °ú ´Þ¸® Æ÷ÀÎÅÍ Å¸ÀÔ¿¡ ÁÖÀÇ ÇÏ¿©¾ß ÇÕ´Ï´Ù.
** C/C++ ¿¡¼± ¾î¶² ŸÀÔÀÇ Æ÷ÀÎÅÍÀÌµç ´ëÀÔ ÇÒ ¼ö ÀÖ½À´Ï´Ù.
int* pNum; char* pText; ... pNum = pText; pText = pNum;
** Delphi ¿¡¼± ´Ù¸¥ ŸÀÔÀÇ Æ÷ÀÎÅ͸¦ ´ëÀÔ ÇÏ¸é ¿¡·¯·Î °£ÁÖ ÇÕ´Ï´Ù.
pNum: PInteger; pText: PChar; ... pNum := pText; // ¿¡·¯. Pointer Type ÀÌ ´Ù¸¨´Ï´Ù.
2. char* vs PChar
C/C++ ÀÇ char* °ú Delphi PChar ´Â ¿ÏÀüÈ÷ °°½À´Ï´Ù.
3. Æ÷ÀÎÅÍ Å¸ÀÔ ¿¡·¯ ó¸®
Æ÷ÀÎÅ͸¦ »ç¿ëÇϸé ÀÚÀ¯·Ó°Ô µ¥ÀÌÅ͸¦ »ç¿ë ÇÒ ¼ö Àִµ¥, ŸÀÔ ¿¡·¯°¡ ³ª¸é ºÒÆí ÇÕ´Ï´Ù.
Pointer typeÀ¸·Î wrapping ÇÏ¸é µË´Ï´Ù. Pointer type Àº ŸÀÔ ¾ø´Â Æ÷ÀÎÅÍ ÀÔ´Ï´Ù.
pNum: PInteger; pText: PChar; ... pNum := Pointer(pText); // Pointer Type ¿¡·¯ ¾È³²
4. String °ú PChar
String ¿¡ ´ëÇؼ À妽º·Î Á¢±Ù ÇÏ´Â ¹æ¹ý( sTemp[n] ) °ú Æ÷ÀÎÅÍ·Î Á¢±Ù ÇÏ´Â ¹æ¹ý( PChar )ÀÌ ÀÖ½À´Ï´Ù.
Delphi ¿¡¼´Â String À» À妽º·Î Á¢±Ù ÇÏ´Â ³»ºÎ ÇÔ¼ö°¡ ÃÖÀûÈ µÇ¾î ÀÖ¾î¼, sTemp[n] ¹æ¹ýÀÌ pTemp^ ¹æ¹ý º¸´Ù Á¶±Ý ºü¸£°Å³ª ºñ½ÁÇÏ´Ù°í ÇÕ´Ï´Ù.
¿¹) String ÀÇ "," ¸¦ "=" ·Î º¯°æ (³»¿ë Áß¿¡ " ' "ÀÌ µé¾î°¡¸é ¿Ã¶ó°¡Áö ¾Ê¾Æ¼ " " " ·Î º¯°æ) sTemp: string pTemp: PChar; i: integer; ... for i := 1 to Length(sTemp) do // À妽º·Î Á¢±Ù ¹æ¹ý begin if sTemp[i] = "," then sTemp[i] := "="; ... end; ... pTemp := PChar(sTemp); // Æ÷ÀÎÅÍ·Î Á¢±Ù ÇÏ´Â ¹æ¹ý for i := 1 to Length(sTemp) do begin if pTemp^ = "," then pTemp^ := "="; pTemp := pTemp + 1; ... end;
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