用迭代法求立方根的C++代码

#include <stdio.h>

double cube_root(double x) {
    double low = 0.0, high = x, mid;
    while (high - low > 1e-9) {
        mid = (low + high) / 2;
        if (mid * mid * mid > x) {
            high = mid;
        } else {
            low = mid;
        }
    }
    return low;
}

int main() {
    double x;
    printf("请输入一个实数：");
    scanf("%lf", &x);
    printf("%.6lf 的立方根是：%.6lf\n", x, cube_root(x));
    return 0;
}