📄 经典c程序100例==21--30.htm
字号:
var bottomedge = document.body.clientHeight-event.clientY;
if (rightedge < ie5menu.offsetWidth)
ie5menu.style.left = document.body.scrollLeft + event.clientX - ie5menu.offsetWidth;
else
ie5menu.style.left = document.body.scrollLeft + event.clientX;
if (bottomedge < ie5menu.offsetHeight)
ie5menu.style.top = document.body.scrollTop + event.clientY - ie5menu.offsetHeight;
else
ie5menu.style.top = document.body.scrollTop + event.clientY;
ie5menu.style.visibility = "visible";
return false;
}
function hidemenuie5() {
ie5menu.style.visibility = "hidden";
}
function highlightie5() {
if (event.srcElement.className == "menuitems") {
event.srcElement.style.backgroundColor = "highlight";
event.srcElement.style.color = "white";
if (display_url)
window.status = event.srcElement.url;
}
}
function lowlightie5() {
if (event.srcElement.className == "menuitems") {
event.srcElement.style.backgroundColor = "";
event.srcElement.style.color = "black";
window.status = "";
}
}
function jumptoie5() {
if (event.srcElement.className == "menuitems") {
if (event.srcElement.getAttribute("target") != null)
window.open(event.srcElement.url, event.srcElement.getAttribute("target"));
else
window.location = event.srcElement.url;
}
}
// End -->
</SCRIPT>
<SCRIPT language=JavaScript>
<!--
function MM_reloadPage(init) { //reloads the window if Nav4 resized
if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
// -->
</SCRIPT>
<DIV id=Layer1
style="Z-INDEX: 1; LEFT: 484px; VISIBILITY: hidden; WIDTH: 146px; POSITION: absolute; TOP: 68px; HEIGHT: 24px">
<TABLE height=24 cellSpacing=0 cellPadding=1 width="100%"
bgColor=#000000 border=0>
<TBODY>
<TR>
<TD>
<TABLE height=24 cellSpacing=0 cellPadding=0
width="100%" bgColor=#ffffe6 border=0>
<TBODY>
<TR>
<TD
class=zi>点击“保存设置”按扭可使您本次阅读的整体设置（文字、字号、背景）得以保留，下次阅读时您就不必再重新设置，以符合您的阅读习惯。</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></DIV>
<DIV id=Layer2
style="Z-INDEX: 2; LEFT: 644px; WIDTH: 19px; POSITION: absolute; TOP: 6px; HEIGHT: 14px"> </DIV>
<TABLE cellSpacing=0 cellPadding=0 width=650 align=center>
<TBODY>
<TR vAlign=center align=left>
<TD vAlign=top width=650
background=经典c程序100例==21--30.files/titleback.png colSpan=2
height=22>
<TABLE cellSpacing=2 cellPadding=0 width="100%"
border=0>
<TBODY>
<TR>
<TD vAlign=top width=40> </TD>
<TD class=zi vAlign=center width=562><B><FONT
color=#ffffff>.:.:经典c程序100例==21--30:.:.</FONT></B></TD>
<TD class=zi vAlign=top width=18> </TD>
<TD vAlign=center width=16><A title=关闭窗口
href="javascript:window.close();"><IMG height=19
src="经典c程序100例==21--30.files/close.png" width=19
border=0></A></TD></TR></TBODY></TABLE></TD></TR>
<TR vAlign=center align=left>
<TD vAlign=top bgColor=#bdcff7 colSpan=2 height=24>
<TABLE cellSpacing=0 cellPadding=0 width="100%"
border=0>
<TBODY>
<TR>
<TD width=1></TD>
<TD align=right width=24><A
onmouseover="MM_swapImage('Image5','','images/home2.png',1)"
onmouseout=MM_swapImgRestore()
href="http://www.ie586.net/"><IMG title=返回页面
height=22 src="经典c程序100例==21--30.files/home.png"
width=24 border=0 name=Image5></A></TD>
<TD align=right width=24><A
onmouseover="MM_swapImage('Image4','','images/re_write2.gif',1)"
onmouseout=MM_swapImgRestore()
href="http://210.76.63.207/lb5000/leoboard.cgi"><IMG
title=发表评论 height=19
src="经典c程序100例==21--30.files/re_write.gif"
width=20 border=0 name=Image4></A></TD>
<TD width=24>
<DIV align=center><A
onclick="window.print();return false"
href="http://www.vcok.com/class/list.asp?id=205#"><IMG
onmouseover="MM_swapImage('p','','images/print2.png',1)"
height=22 alt=打印文档
src="经典c程序100例==21--30.files/print.png" width=24
border=0 name=p></A></DIV></TD>
<TD width=2></TD>
<TD class=zi vAlign=center width=308
height=25><FONT size=2> 文字 <SELECT
style="WIDTH: 60px; HEIGHT: 20px; fontsize: 9pt"
onchange=setFontColor(this.value);
name=seltextcolor> <OPTION value=#000000
selected>黑色</OPTION> <OPTION
value=#FFFFFF>白色</OPTION> <OPTION
value=#FF0000>红色</OPTION> <OPTION
value=#555555>灰色</OPTION> <OPTION
value=#00FF00>绿色</OPTION> <OPTION
value=#0000FF>蓝色</OPTION> <OPTION
value=#00cccc>青色</OPTION> <OPTION
value=#ffff00>黄色</OPTION></SELECT> 背景 <SELECT
style="WIDTH: 60px; HEIGHT: 20px; fontsize: 9pt"
onchange=setBgColor(this.value); name=selbkcolor>
<OPTION value=#FFFFFF selected>白色</OPTION>
<OPTION value=#000000>黑色</OPTION> <OPTION
value=#FFCCFF>粉红</OPTION> <OPTION
value=#CCCCCC>灰色</OPTION> <OPTION
value=#CCFFCC>绿色</OPTION> <OPTION
value=#99CCFF>蓝色</OPTION> <OPTION
value=#CCFFFF>青色</OPTION> <OPTION
value=#FFCCCC>综色</OPTION></SELECT> 字号 <SELECT
style="WIDTH: 60px; HEIGHT: 20px; fontsize: 9pt"
onchange=setFontSize(this.value);
name=selfontsize> <OPTION value=9pt selected>9
pt</OPTION> <OPTION value=10pt>10 pt</OPTION>
<OPTION value=12pt>12 pt</OPTION> <OPTION
value=14pt>14 pt</OPTION> <OPTION value=16pt>16
pt</OPTION> <OPTION value=19pt>19
pt</OPTION></SELECT> </FONT></TD>
<TD class=zi width=85><FONT size=2><A
onmouseover="MM_showHideLayers('Layer1','','show')"
onmouseout="MM_showHideLayers('Layer1','','hide')"
href="javascript:saveit();"><IMG
onmouseover="MM_swapImage('s','','images/save2.png',1)"
height=22 src="经典c程序100例==21--30.files/save.png"
width=23 align=absBottom border=0
name=s></A>保存设置</FONT></TD>
<TD class=zi width=2><FONT size=2> </FONT></TD>
<TD class=zi width=164><FONT
size=2> 人气指数：<FONT
color=#ff0000>12339</FONT>
</FONT></TD></TR></TBODY></TABLE></TD></TR>
<TR vAlign=center align=left>
<TD bgColor=#bdcff7 colSpan=2 height=370>
<TABLE height=360 cellSpacing=0 borderColorDark=#4275d6
cellPadding=5 width=640 align=center bgColor=#ffffff
borderColorLight=#ffffff border=1>
<TBODY>
<TR vAlign=top align=left>
<TD id=thetd style="FONT-SIZE: 10pt">
<DIV style="WIDTH: 626px; HEIGHT: 132px"
align=left>
<P align=left>
<STYLE type=text/css>TD {
FONT-SIZE: 9pt
}
BODY {
FONT-SIZE: 9pt; COLOR: #000000; LINE-HEIGHT: 150%
}
A:link {
COLOR: #000000; TEXT-DECORATION: none
}
A:visited {
COLOR: #000000; TEXT-DECORATION: none
}
A:active {
COLOR: #000000; TEXT-DECORATION: none
}
A:hover {
COLOR: #ff0000; TEXT-DECORATION: underline
}
</STYLE>
<P><FONT color=#ff9933><B><FONT size=5> <FONT
color=#3300cc>经典c程序100例==21--30</FONT></FONT></B></FONT></P>
<P><FONT
color=#990000>【程序21】</FONT><BR>题目：猴子吃桃问题：猴子第一天摘下若干个桃子，当即吃了一半，还不瘾，又多吃了一个<BR> 第二天早上又将剩下的桃子吃掉一半，又多吃了一个。以后每天早上都吃了前一天剩下<BR> 的一半零一个。到第10天早上想再吃时，见只剩下一个桃子了。求第一天共摘了多少。<BR>1.程序分析：采取逆向思维的方法，从后往前推断。<BR>2.程序源代码：<BR>main()<BR>{<BR>int
day,x1,x2;<BR>day=9;<BR>x2=1;<BR>while(day>0)<BR> {x1=(x2+1)*2;/*第一天的桃子数是第2天桃子数加1后的2倍*/<BR> x2=x1;<BR> day--;<BR> }<BR>printf("the
total is
%d\n",x1);<BR>}<BR>==============================================================<BR><FONT
color=#990000>【程序22】</FONT><BR>题目：两个乒乓球队进行比赛，各出三人。甲队为a,b,c三人，乙队为x,y,z三人。已抽签决定<BR> 比赛名单。有人向队员打听比赛的名单。a说他不和x比，c说他不和x,z比，请编程序找出<BR> 三队赛手的名单。
<BR>1.程序分析：判断素数的方法：用一个数分别去除2到sqrt(这个数)，如果能被整除，<BR> 则表明此数不是素数，反之是素数。
<BR>2.程序源代码：<BR>main()<BR>{<BR>char
i,j,k;/*i是a的对手，j是b的对手，k是c的对手*/<BR>for(i='x';i<='z';i++)<BR> for(j='x';j<='z';j++)<BR> {<BR> if(i!=j)<BR> for(k='x';k<='z';k++)<BR> {
if(i!=k&&j!=k)<BR> {
if(i!='x'&&k!='x'&&k!='z')<BR> printf("order
is
a--%c\tb--%c\tc--%c\n",i,j,k);<BR> }<BR> }<BR> }<BR>}<BR>==============================================================<BR><FONT
⌨️ 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 + -