奇数项的和及偶数项的积

&nbsp; <p class="MsoNormal"> <span style="font-family:宋体;">输入</span><span>n</span><span style="font-family:宋体;">items数，求出奇数项的和及偶数项的积。</span> </p> <table style="border-collapse:collapse;" class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0"> <tbody> <tr> <td valign="top" width="284"> <p class="MsoNormal"> <span style="font-family:宋体;">输入：</span> </p> <p class="MsoNormal"> <span>10 </span> </p> <p class="MsoNormal"> <span>4<span>&nbsp; </span>6<span>&nbsp; </span>9<span>&nbsp; </span>23<span>&nbsp; </span>45<span>&nbsp; </span>5<span>&nbsp; </span>90<span>&nbsp; </span>123<span>&nbsp; </span>3<span>&nbsp; </span>88</span> </p> </td> <td valign="top" width="284"> <p class="MsoNormal"> <span style="font-family:宋体;">输出：</span> </p> <p class="MsoNormal"> <span>151<span>&nbsp; </span>7468560</span> </p> </td> </tr> </tbody> </table>