81,122
社区成员




<%@ page contentType="text/html;charset=GB2312"%>
<HTML><BODY bgcolor=pink><FONT size=2>
<FORM action="computer.jsp" method=post name=form>
<input type="text" name="sizeA" value=1 size=6>
<input type="text" name="sizeB" value=1 size=6>
<input type="text" name="sizeC" value=1 size=6>
<input TYPE="submit" value="提交" name="submit">
</FORM>
</FONT>
</BODY>
</HTML>
<%@ page contentType="text/html;charset=GB2312"%>
<HTML><body bgcolor=yellow><font size=3>
<% String sideA=request.getParameter("sideA");
String sideB=request.getParameter("sizeB");
String sideC=request.getParameter("sideC");
try{
double a=Double.parseDouble(sideA);
double b=Double.parseDouble(sideB);
double c=Double.parseDouble(sideC);
double p=(a+b+c)/2,area=0;
area=Math.sqrt(p*(p-a)*(p-b)*(p-c));
out.println("<BR>三角形面积 ");
}catch(NumberFormatException ee)
{
out.println("<BR>请输入数字字符 ");
}
%>
</font>
</body>
</HTML>