若有下面的说明和定义，则sizeof（structaa）的值是 structaa {intr1;doubler2;floatr3; un" /> <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"; </script> <sc