c++ - 类型 "void *"的值不能分配给类型 "RANDOMSTRUCT *"的实体

Question

所以我在 void 中研究 malloc。我有一个代码:

    int iInitRandomPhaseArrays(WS_ELEMENT *Aufbau, RANDOMSTRUCT **random)
{
    WS_ELEMENT *Act;
    int iCounter = 0, i;
    RANDOMSTRUCT *dummy;

    Act = Aufbau;

    if (*random != NULL)
        return -1;

    while (Act != NULL)
    {
        if (Act->operation == Linsenarray)
            iCounter++;
        Act = Act->pNext;
    }
    if (iCounter)
    {
        dummy = malloc(iCounter * sizeof(random));

        ran1_3ARG(&ran1_idum, &ran1_iy, ran1_iv);
        dummy[0].idum = ran1_idum;
        dummy[0].iy = ran1_iy;
        memcpy(dummy[0].iv, ran1_iv, sizeof(ran1_iv));

        for (i = 0; i < iCounter; i++)
            ran1_3ARG(&dummy[i].idum, &dummy[i].iy, dummy[i].iv);
        dummy[0].Anzahl = iCounter;
        *random = dummy;
    }



    return iCounter;
}

此处错误:

不能将“void *”类型的值分配给“RANDOMSTRUCT *”类型的实体

谁能帮我解决一下？

Answer 1

改变行:

dummy = malloc(iCounter * sizeof(random));

说:

dummy = (RANDOMSTRUCT *)malloc(iCounter * sizeof(RANDOMSTRUCT));