G:\c语言\第一次试验.cpp(33) : error C2296: '*' : illegal, left operand has type 'int *'

newbase = (ElemType *)realloc(L.elem,(L.listsize + LISTINCREMENT) ) * sizeof(ElemType);
括号加错位置了吧，应该为
newbase = (ElemType *)realloc(L.elem,(L.listsize + LISTINCREMENT) * sizeof(ElemType));