
norm

㭪            頥        ᮫⭮       祭
                   ᭮ ᫠.

⠪          #include<complex.h>
                   double norm(complex x);

, ᮤঠ騩   complex.h
⨯

ᠭ            ᯮ짮      norm          ந
                   ९,  ᫨ ⢨⥫쭠   
                    ᫨誮 訬.

頥       norm(x) 頥 real(x)*real(x)+imag(x)*imag(x).
祭

७ᨬ       㭪樨   ॡ   ++        ⮬
                   ७ᨬ.

 ⠪     arg, complex, polar.

ਬ:

#include<stream.h>
#include<complex.h>

int main(void)
{
   double x = 3.1,y=4.2;
   complex z = complex(x,y);
   cout << "z =" << z << "\n";
   cout << "⢨⥫쭠  =" << real(z) << "\n";
   cout << "  =" << imag(z) << "\n";
   cout << "᭮ ᮯ殮 z, =" << conj(z) << "\n";
   double mag = sqrt(norm(z));
   double ang = arg(z);
   cout << "ୠ ଠ z:\n";
   cout << "祭: " << mag << "\n";
   cout << ": ( ࠤ)" << ang << "\n";
   cout << "⠭ z  ।⠢   न\
                 :\n";
   cout << "  z =" << polar(mag,ang) << "\n";
   return 0;
}


normvideo

㭪            ⠭ ଠ ⥭ᨢ 뢮
                   ᨬ.

⠪          #include<conio.h>
                   void normvideo(void);

, ᮤঠ騩   conio.h
⨯

ᠭ           normvideo ⠭  室  祭  
                   ⥭ᨢ      ਡ⮢  ⥪饣   梥
                   ᨬ.

                   맮 ⮩ 㭪樨    ࠦ      ⥪,
                   室饬    ࠭,    ⮫쪮    १
                   ࠡ  㭪権,  ந  뢮    ⥪⮢
                   ०,  אַ  뢮   ᮫,   ⮫쪮 ᫥
                   맮 㭪樨 normvideo.

頥       .
祭

७ᨬ      normvideo ࠡ⠥    ⮫쪮          
                   ᮢ⨬    IBM PC.  筠 㭪樨  
                   Turbo Pascal. 㭪  ᮢ⨬  Windows.

 ⠪     highvideo, lowvideo, textattr, textcolor.

ਬ:

#include<conio.h>

int main(void)
{
   clrscr();
   lowvideo();
   cprintf("  ⥭ᨢ");
   highvideo();
   cprintf(" ᮪ ⥭ᨢ");
   normvideo();
   cprintf(" ଠ쭮 ⥭ᨢ");
   return 0;
}


nosound

㭪            몫砥 ஥ .

           #include<dos.h>
                   void nosound(void);

, ᮤঠ騩   dos.h
⨯

ᠭ           몫砥 ஥ , 祭 㭪樥
                   sound.

頥       .
祭

७ᨬ      nosound ࠡ⠥  ⮫쪮   ᮢ⨬
                    IBM PC.  筠 㭪樨   Turbo Pascal.
                   㭪  ᮢ⨬  Windows.

 ⠪     delay, sound.

ਬ:

/*  ⮩ 7   祭 5 ᥪ㭤
   . 7  -  १᭠  ९ -
    믫.  뫮 㦥 ᪨  -
   ,  䠡ਪ,   祭 ⠪ 㪠, 
   믫, 室訥 筮 , 㬨ࠫ.
    ஥  襣  
    ஢ ⠪ . /

int main(void)
{
  sound(7);
  delay(5000);
  nosound();
  return 0;
}

