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📄 踏入c++中的雷区——c++内存管理详解4-开发频道-c++-天极网.mht

📁 讲述C++内存管理的文章
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free=B6=D4p=C1=AC=D0=F8=B2=D9=D7=F7=C1=BD=B4=CE=BE=CD=BB=E1=B5=BC=D6=C2=B3=
=CC=D0=F2=D4=CB=D0=D0=B4=ED=CE=F3=A1=A3<BR><BR>=A1=A1=A1=A1<B>9=A1=A2new/=
delete=20
=B5=C4=CA=B9=D3=C3=D2=AA=B5=E3</B><BR><BR>=A1=A1=A1=A1=D4=CB=CB=E3=B7=FBn=
ew=CA=B9=D3=C3=C6=F0=C0=B4=D2=AA=B1=C8=BA=AF=CA=FDmalloc=BC=F2=B5=A5=B5=C3=
=B6=E0=A3=AC=C0=FD=C8=E7=A3=BA<BR><BR>
<TABLE borderColor=3D#cccccc width=3D"90%" align=3Dcenter =
bgColor=3D#e3e3e3 border=3D1>
  <TBODY>
  <TR>
    <TD>int *p1 =3D (int *)malloc(sizeof(int) * length);<BR>int *p2 =3D =
new=20
      =
int[length];</TD></TR></TBODY></TABLE><BR>=A1=A1=A1=A1=D5=E2=CA=C7=D2=F2=CE=
=AAnew=C4=DA=D6=C3=C1=CBsizeof=A1=A2=C0=E0=D0=CD=D7=AA=BB=BB=BA=CD=C0=E0=D0=
=CD=B0=B2=C8=AB=BC=EC=B2=E9=B9=A6=C4=DC=A1=A3=B6=D4=D3=DA=B7=C7=C4=DA=B2=BF=
=CA=FD=BE=DD=C0=E0=D0=CD=B5=C4=B6=D4=CF=F3=B6=F8=D1=D4=A3=ACnew=D4=DA=B4=B4=
=BD=A8=B6=AF=CC=AC=B6=D4=CF=F3=B5=C4=CD=AC=CA=B1=CD=EA=B3=C9=C1=CB=B3=F5=CA=
=BC=BB=AF=B9=A4=D7=F7=A1=A3=C8=E7=B9=FB=B6=D4=CF=F3=D3=D0=B6=E0=B8=F6=B9=B9=
=D4=EC=BA=AF=CA=FD=A3=AC=C4=C7=C3=B4new=B5=C4=D3=EF=BE=E4=D2=B2=BF=C9=D2=D4=
=D3=D0=B6=E0=D6=D6=D0=CE=CA=BD=A1=A3=C0=FD=C8=E7<BR><BR>
<TABLE borderColor=3D#cccccc width=3D"90%" align=3Dcenter =
bgColor=3D#e3e3e3 border=3D1>
  <TBODY>
  <TR>
    <TD>class Obj<BR>{<BR>=A1=A1public :<BR>=A1=A1=A1=A1Obj(void); // =
=CE=DE=B2=CE=CA=FD=B5=C4=B9=B9=D4=EC=BA=AF=CA=FD<BR>=A1=A1=A1=A1Obj(int=20
      x); // =
=B4=F8=D2=BB=B8=F6=B2=CE=CA=FD=B5=C4=B9=B9=D4=EC=BA=AF=CA=FD<BR>=A1=A1=A1=
=A1=A1=AD<BR>}<BR>void Test(void)<BR>{<BR>=A1=A1Obj *a =3D new=20
      Obj;<BR>=A1=A1Obj *b =3D new Obj(1); // =
=B3=F5=D6=B5=CE=AA1<BR>=A1=A1=A1=AD<BR>=A1=A1delete a;<BR>=A1=A1delete=20
      =
b;<BR>}</TD></TR></TBODY></TABLE><BR>=A1=A1=A1=A1=C8=E7=B9=FB=D3=C3new=B4=
=B4=BD=A8=B6=D4=CF=F3=CA=FD=D7=E9=A3=AC=C4=C7=C3=B4=D6=BB=C4=DC=CA=B9=D3=C3=
=B6=D4=CF=F3=B5=C4=CE=DE=B2=CE=CA=FD=B9=B9=D4=EC=BA=AF=CA=FD=A1=A3=C0=FD=C8=
=E7<BR><BR>
<TABLE borderColor=3D#cccccc width=3D"90%" align=3Dcenter =
bgColor=3D#e3e3e3 border=3D1>
  <TBODY>
  <TR>
    <TD>Obj *objects =3D new Obj[100]; //=20
=B4=B4=BD=A8100=B8=F6=B6=AF=CC=AC=B6=D4=CF=F3</TD></TR></TBODY></TABLE><B=
R>=A1=A1=A1=A1=B2=BB=C4=DC=D0=B4=B3=C9<BR><BR>
<TABLE borderColor=3D#cccccc width=3D"90%" align=3Dcenter =
bgColor=3D#e3e3e3 border=3D1>
  <TBODY>
  <TR>
    <TD>Obj *objects =3D new Obj[100](1);//=20
=B4=B4=BD=A8100=B8=F6=B6=AF=CC=AC=B6=D4=CF=F3=B5=C4=CD=AC=CA=B1=B8=B3=B3=F5=
=D6=B51</TD></TR></TBODY></TABLE><BR>=A1=A1=A1=A1=D4=DA=D3=C3delete=CA=CD=
=B7=C5=B6=D4=CF=F3=CA=FD=D7=E9=CA=B1=A3=AC=C1=F4=D2=E2=B2=BB=D2=AA=B6=AA=C1=
=CB=B7=FB=BA=C5=A1=AE[]=A1=AF=A1=A3=C0=FD=C8=E7<BR><BR>
<TABLE borderColor=3D#cccccc width=3D"90%" align=3Dcenter =
bgColor=3D#e3e3e3 border=3D1>
  <TBODY>
  <TR>
    <TD>delete []objects; // =D5=FD=C8=B7=B5=C4=D3=C3=B7=A8<BR>delete =
objects; //=20
=B4=ED=CE=F3=B5=C4=D3=C3=B7=A8</TD></TR></TBODY></TABLE><BR>=A1=A1=A1=A1=BA=
=F3=D5=DF=CF=E0=B5=B1=D3=DAdelete=20
objects[0]=A3=AC=C2=A9=B5=F4=C1=CB=C1=ED=CD=E299=B8=F6=B6=D4=CF=F3=A1=A3<=
BR><BR>=A1=A1=A1=A1<B>10=A1=A2=D2=BB=D0=A9=D0=C4=B5=C3=CC=E5=BB=E1</B><BR=
><BR>=A1=A1=A1=A1=CE=D2=C8=CF=CA=B6=B2=BB=C9=D9=BC=BC=CA=F5=B2=BB=B4=ED=B5=
=C4C++/C=B3=CC=D0=F2=D4=B1=A3=AC=BA=DC=C9=D9=D3=D0=C8=CB=C4=DC=C5=C4=C5=C4=
=D0=D8=B8=AC=CB=B5=CD=A8=CF=FE=D6=B8=D5=EB=D3=EB=C4=DA=B4=E6=B9=DC=C0=ED=A3=
=A8=B0=FC=C0=A8=CE=D2=D7=D4=BC=BA=A3=A9=A1=A3=CE=D2=D7=EE=B3=F5=D1=A7=CF=B0=
C=D3=EF=D1=D4=CA=B1=CC=D8=B1=F0=C5=C2=D6=B8=D5=EB=A3=AC=B5=BC=D6=C2=CE=D2=
=BF=AA=B7=A2=B5=DA=D2=BB=B8=F6=D3=A6=D3=C3=C8=ED=BC=FE=A3=A8=D4=BC1=CD=F2=
=D0=D0C=B4=FA=C2=EB=A3=A9=CA=B1=C3=BB=D3=D0=CA=B9=D3=C3=D2=BB=B8=F6=D6=B8=
=D5=EB=A3=AC=C8=AB=D3=C3=CA=FD=D7=E9=C0=B4=B6=A5=CC=E6=D6=B8=D5=EB=A3=AC=CA=
=B5=D4=DA=B4=C0=B1=BF=B5=C3=B9=FD=B7=D6=A1=A3=B6=E3=B1=DC=D6=B8=D5=EB=B2=BB=
=CA=C7=B0=EC=B7=A8=A3=AC=BA=F3=C0=B4=CE=D2=B8=C4=D0=B4=C1=CB=D5=E2=B8=F6=C8=
=ED=BC=FE=A3=AC=B4=FA=C2=EB=C1=BF=CB=F5=D0=A1=B5=BD=D4=AD=CF=C8=B5=C4=D2=BB=
=B0=EB=A1=A3<BR><BR>=A1=A1=A1=A1=CE=D2=B5=C4=BE=AD=D1=E9=BD=CC=D1=B5=CA=C7=
=A3=BA<BR><BR>=A1=A1=A1=A1=A3=A81=A3=A9=D4=BD=CA=C7=C5=C2=D6=B8=D5=EB=A3=AC=
=BE=CD=D4=BD=D2=AA=CA=B9=D3=C3=D6=B8=D5=EB=A1=A3=B2=BB=BB=E1=D5=FD=C8=B7=CA=
=B9=D3=C3=D6=B8=D5=EB=A3=AC=BF=CF=B6=A8=CB=E3=B2=BB=C9=CF=CA=C7=BA=CF=B8=F1=
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=D1=F8=B3=C9=A1=B0=CA=B9=D3=C3=B5=F7=CA=D4=C6=F7=D6=F0=B2=BD=B8=FA=D7=D9=B3=
=CC=D0=F2=A1=B1=B5=C4=CF=B0=B9=DF=A3=AC=D6=BB=D3=D0=D5=E2=D1=F9=B2=C5=C4=DC=
=B7=A2=CF=D6=CE=CA=CC=E2=B5=C4=B1=BE=D6=CA=A1=A3=20

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