int preordertraverse(bitree t,int(* printelement)(elemtype e))
{
    if(t)
    {
        if(printelement(t->data))
            if(preordertraverse(t->lchild,printelement))
                if(preordertraverse(t->rchild,printelement))
                    return OK;
        return ERROR;
    }
    else return OK;
}
怎么在其他函数中调用这个函数啊？调用时，应该怎么写啊？preordertraverse(t,int(* printelement)(elemtype e));红色部分应该写什么？感谢赐教啊~~
printelement(char e)这是个函数，elemtype为char

[ 本帖最后由 sxl4751 于 2010-4-26 22:34 编辑 ]

int printelement(elemtype e)
{
    printf("%c",e);
    return OK;
}

int preordertraverse(bitree t,int(* printelement)(elemtype e))
{
    if(t)
    {
        if(printelement(t->data))
            if(preordertraverse(t->lchild,printelement))
                if(preordertraverse(t->rchild,printelement))
                    return OK;
        return ERROR;
    }
    else return OK;
}

还是不行

D:\数据结构\6\6.cpp(75) : error C2664: 'preordertraverse' : cannot convert parameter 2 from 'int' to 'int (__cdecl *)(char)'
        Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
执行 cl.exe 时出错.

6.obj - 1 error(s), 0 warning(s)

谢谢6、7楼~ok了~

同时也谢谢其他帮助我的兄弟门，