C语言迭代法程序求助ΔL/L=-3*10^（-4）+8*10^（-6）*（T-273）+2*10^（-9）*（T-273

/>#include <stdio。h>#define result(T)  (((-3) * 0。0001) + (8 * 0。000001 * (T - 273)) + (2 * 0。000000001 * (T - 273) * (T - 273)))int main(void){    int T = 273;    int count = 0;    int i = 0;    double ret = 0。0;    printf("Please input iteration count ! \n");    scanf("%d", &count);    for(i = 0; i < count; i++)    {        ret = result(T);        T += 50;        printf("ret is [%lf] \n", ret);    }    return 0;}运行结果Please input iteration count ! 10ret is [-0。000300] ret is [0。000105] ret is [0。000520] ret is [0。000945] ret is [0。001380] ret is [0。001825] ret is [0。002280] ret is [0。002745] ret is [0。003220] ret is [0。003705]