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1. Áö±Ý±îÁö ¹è¿î ¸ðµç ŸÀÔÀ» Æ÷ÇÔÇÏ´Â °ø¿ëü¸¦ Á¤ÀÇÇØº¸ÀÚ. ±×¸®°í ¸ðµç ¸â¹öÀÇ ÁÖ¼Ò¸¦ Ãâ·ÂÇØº¸ÀÚ. ¸ðµÎ µ¿ÀÏÇÑ ÁÖ¼Ò¸¦ °®´ÂÁö È®ÀÎÇØº¸ÀÚ

 

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#include <iostream>

using namespace std;

 

union AllType

{

     signed char          sc;

     unsigned char   uc;

     signed short    ss;

     unsigned short  us;

     signed int      si;

     unsigned int    ui;

     signed long          sl;

     unsigned long   ul;

     float           f ;

     double               d ;

     long double          ld;

};

 

int main()

{

     AllType at;

 

     cout << "&at    = " << &at << "\n";

     cout << "&at.sc = " << (int*)&at.sc << "\n";

     cout << "&at.uc = " << (int*)&at.uc << "\n";

     cout << "&at.ss = " << &at.ss << "\n";

     cout << "&at.us = " << &at.us << "\n";

     cout << "&at.si = " << &at.si << "\n";

     cout << "&at.ui = " << &at.ui << "\n";

     cout << "&at.sl = " << &at.sl << "\n";

     cout << "&at.ul = " << &at.ul << "\n";

     cout << "&at.f  = " << &at.f  << "\n";

     cout << "&at.d  = " << &at.d  << "\n";

     cout << "&at.ld = " << &at.ld << "\n";

 

     return 0;

}

 

2. ´ÙÀ½ Äڵ忡¼­ ÃÖÁ¾ÀûÀ¸·Î uni.i°¡ °®´Â °ªÀº ¾î¶»°Ô µÉ±î? 16Áø¼ö·Î ´äº¯Çغ¸ÀÚ.

union UNI

{

             int i;

             char c;

} uni;

uni.i = 0x12345678;

uni.c = 0x90;

 

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uni.i¿Í uni.c´Â °°Àº ¸Þ¸ð¸® °ø°£À» Â÷ÁöÇÏÁö¸¸ uni.i°¡ uni.c º¸´Ù Å« Å©±â¸¦ °¡Áö°í ÀÖ´Ù. ±×·¯¹Ç·Î uni.i¿Í uni.c°¡ °øÀ¯Çϰí ÀÖ´Â °ø°£ÀÇ °ª¸¸ ¹Ù²î°Ô 0x90À¸·Î ¹Ù²î´Â °ÍÀÌ ¸Â´Ù. ±×·¡¼­ ÃÖÁ¾ÀûÀ¸·Î uni.i°¡ °®´Â °ªÀº 0x12345690ÀÌ µÈ´Ù.

 

 

3. ¿©·¯ºÐÀÌ ÁÁ¾ÆÇÏ´Â 10°³ÀÇ ±¹°¡¿¡ ´ëÇÑ ½Éº¼À» Á¤ÀÇÇÏ´Â ¿­°Åü¸¦ ¸¸µé¾îº¸ÀÚ.

 

¿©·¯ºÐÀÌ ÇØº¸ÀÚ.

 

4. ·¹ÆÛ·±½º´Â ¾î¶² ŸÀÔÀÇ º¯¼ö¶óµµ ÂüÁ¶ÇÒ ¼ö ÀÖ´Ù. int* ŸÀÔÀÇ º¯¼ö¸¦ ÂüÁ¶ÇÒ ¼ö ÀÖ´Â ·¹ÆÛ·±½º º¯¼ö¸¦ Á¤ÀÇÇØº¸ÀÚ.

 

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     int a = 100;

     int* p = &a;

     int*& r = p;

 

5. typedefÀ» »ç¿ëÇØ¼­ 'int ŸÀÔ ¿ø¼Ò¸¦ 10°³ °®´Â ¹è¿­' ŸÀÔÀ» ARR_INT_10 À̶ó´Â »õ·Î¿î ŸÀÔ À̸§À¸·Î Á¤ÀÇÇØº¸ÀÚ.

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typedef int ARR_INT_10[10];