有以下程序：void main（){int a=15,b=21,m=0;switch（a%3){case0:m＋＋;break;case 1:m＋＋;switch（b%2" /> <div class="width960"> <div id="div_lit_topnav_960_90"> <div class="h15"> </div> <script type="text/javascript"> /*Ask_960-90_通栏*/ var cpro_id = "u1624785"