📄 csdn_文档中心_cstring,string,char的综合比较(一).htm
字号:
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">次之，可以与基本的一些字符串变量进行</SPAN><SPAN
lang=EN-US>+=</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">而来，包括</SPAN><SPAN
lang=EN-US>char*</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">等；</SPAN></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-list: l0 level1 lfo2; tab-stops: list 42.0pt left 63.0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: Wingdings; mso-fareast-font-family: Wingdings; mso-bidi-font-family: Wingdings"><SPAN
style="mso-list: Ignore"><FONT size=3>²</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><FONT size=3><SPAN lang=EN-US>char*</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">没有</SPAN><SPAN
lang=EN-US>+=</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">运算符，只能使用</SPAN><SPAN
lang=EN-US>strcat</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">把两个指针连在一起；</SPAN></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 36pt; TEXT-INDENT: -18pt; mso-list: l1 level5 lfo1; tab-stops: list 36.0pt"><SPAN
lang=EN-US style="mso-fareast-font-family: 'Times New Roman'"><SPAN
style="mso-list: Ignore"><FONT size=3>d)</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN lang=EN-US><FONT
size=3>operator[]</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-list: l0 level1 lfo2; tab-stops: list 36.0pt 42.0pt left 63.0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: Wingdings; mso-fareast-font-family: Wingdings; mso-bidi-font-family: Wingdings"><SPAN
style="mso-list: Ignore"><FONT size=3>²</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><FONT size=3><SPAN
lang=EN-US>CString</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">最好，当越界时会抛出断言异常；</SPAN></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-list: l0 level1 lfo2; tab-stops: list 36.0pt 42.0pt left 63.0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: Wingdings; mso-fareast-font-family: Wingdings; mso-bidi-font-family: Wingdings"><SPAN
style="mso-list: Ignore"><FONT size=3>²</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><FONT size=3><SPAN
lang=EN-US>string</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">与</SPAN><SPAN
lang=EN-US>char*</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">下标越界结果未定义；</SPAN></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-list: l0 level1 lfo2; tab-stops: list 42.0pt left 63.0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: Wingdings; mso-fareast-font-family: Wingdings; mso-bidi-font-family: Wingdings"><SPAN
style="mso-list: Ignore"><FONT size=3>²</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT
size=3>举例：</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt"><SPAN
lang=EN-US><FONT size=3>char* psz = “joise”;</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt"><SPAN
lang=EN-US><FONT size=3>CString cstr = psz;</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt"><SPAN
lang=EN-US><FONT size=3>cout << cstr[8];</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt"><SPAN
lang=EN-US><FONT size=3>string str = psz;</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt"><SPAN
lang=EN-US><FONT size=3>cout << str[8];</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 36pt"><SPAN
lang=EN-US><FONT size=3>cout << psz[8];</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 36pt; TEXT-INDENT: -18pt; mso-list: l1 level5 lfo1; tab-stops: list 36.0pt"><SPAN
lang=EN-US style="mso-fareast-font-family: 'Times New Roman'"><SPAN
style="mso-list: Ignore"><FONT size=3>e)</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><FONT size=3><SPAN lang=EN-US>operator==
</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN
lang=EN-US>operator!=</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN
lang=EN-US>operator> </SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN
lang=EN-US>operator< </SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN
lang=EN-US>operator>= </SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN
lang=EN-US>perator<=</SPAN></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-list: l0 level1 lfo2; tab-stops: list 42.0pt left 63.0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: Wingdings; mso-fareast-font-family: Wingdings; mso-bidi-font-family: Wingdings"><SPAN
style="mso-list: Ignore"><FONT size=3>²</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><FONT size=3><SPAN
lang=EN-US>CString</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">与</SPAN><SPAN
lang=EN-US>string</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">之间不可以进行比较，但均可以与</SPAN><SPAN
lang=EN-US>char*</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进行比较，并且比较的是值，而不是地址；</SPAN></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 21pt; tab-stops: 42.0pt"><SPAN
lang=EN-US><FONT size=3><SPAN
style="mso-tab-count: 1">
</SPAN>cout << ( psz == cstr );</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 21pt; tab-stops: 42.0pt"><SPAN
lang=EN-US><FONT size=3><SPAN
style="mso-tab-count: 1">
</SPAN>cout << ( psz == str );</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 21pt; tab-stops: 42.0pt"><SPAN
lang=EN-US><FONT size=3><SPAN
style="mso-tab-count: 1">
</SPAN>cout << ( str == psz );</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 21pt; tab-stops: 42.0pt"><FONT
size=3><SPAN lang=EN-US><SPAN
style="mso-tab-count: 1">
</SPAN>cout << ( cstr == psz );//</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以上代码返回均为</SPAN><SPAN
lang=EN-US>1</SPAN></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 21pt; TEXT-INDENT: -21pt; mso-list: l1 level1 lfo1; tab-stops: list 21.0pt"><SPAN
lang=EN-US style="mso-fareast-font-family: 'Times New Roman'"><SPAN
style="mso-list: Ignore"><FONT size=3>(四)</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT
size=3>常用算法</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: 0cm; mso-list: l1 level5 lfo1; tab-stops: list 36.0pt"><SPAN
lang=EN-US style="mso-fareast-font-family: 'Times New Roman'"><SPAN
style="mso-list: Ignore"><FONT size=3>a)</FONT><SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT
size=3>查找</FONT></SPAN></P>
<TABLE border=1 cellPadding=0 cellSpacing=0 class=MsoTableGrid
style="BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; BORDER-LEFT: medium none; BORDER-RIGHT: medium none; BORDER-TOP: medium none; WIDTH: 473.3pt; mso-border-alt: solid windowtext .5pt; mso-yfti-tbllook: 480; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-insidev: .5pt solid windowtext"
width=631>
<TBODY>
<TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes">
<TD
style="BACKGROUND-COLOR: transparent; BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; PADDING-TOP: 0cm; WIDTH: 86.4pt; mso-border-alt: solid windowtext .5pt"
vAlign=top width=115>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作用</SPAN></P></TD>
<TD
style="BACKGROUND-COLOR: transparent; BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #ece9d8; BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; PADDING-TOP: 0cm; WIDTH: 90pt; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt"
vAlign=top width=120>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
lang=EN-US>char*</SPAN></P></TD>
<TD
style="BACKGROUND-COLOR: transparent; BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #ece9d8; BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; PADDING-TOP: 0cm; WIDTH: 171pt; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt"
vAlign=top width=228>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
lang=EN-US>string</SPAN></P></TD>
<TD
style="BACKGROUND-COLOR: transparent; BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #ece9d8; BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; PADDING-TOP: 0cm; WIDTH: 125.9pt; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt"
vAlign=top width=168>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
lang=EN-US>CString</SPAN></P></TD></TR>
<TR style="mso-yfti-irow: 1">
<TD
style="BACKGROUND-COLOR: transparent; BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; PADDING-TOP: 0cm; WIDTH: 86.4pt; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt"
vAlign=top width=115>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">查找指定值</SPAN></P></TD>
<TD
style="BACKGROUND-COLOR: transparent; BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #ece9d8; BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; PADDING-TOP: 0cm; WIDTH: 90pt; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt"
vAlign=top width=120>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -