float型数组为什么计算得到的结果全是0，是因为没有初始化的原因吗,刚开始学习，如果犯了低级错误，请大佬指出来 - C语言论坛

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float型数组为什么计算得到的结果全是0，是因为没有初始化的原因吗,刚开始学习，如果犯了低级错误，请大佬指出来

    float tor[car_num] = {0,0};
    float pe[car_num] = { 0,0 };
    float pm[car_num] = {0,0};

for (i = 0; i < car_num; i++)
    {
        temp_1 = p[i];
        speed = v[i][temp_1];
        gap = FindFront(i);
        if (speed + 1 <= vmax)
            speed++;
        if (speed > gap)
            speed = gap;
        if (speed > 0 && rand_double() <= pi)
            speed--;
        if (speed > 0)
            v[i][temp_1] = -1;
        temp_2 = (temp_1 + speed) % lane;        //位置更新
        p[i] = temp_2;
        v[i][temp_2] = speed;
        a[i] = speed - v[i][temp_1];
        tor[i] =( mg*(0.0076 + 0.000056*speed) + 0.5*0.3*1.2258*8.25*speed * speed+ 1.1*mg / 10 * a[i])*r;  //扭矩
        pe[i] = tor[i] / (0.8*0.95*0.8)*(speed / r*0.8*0.9) / 0.8;

        pm[i] = pe[i] / 3600;