各位大佬，这段哪里错的使用，编译不出来

#include<iostream>//包含头文件iostream
using namespace std;//使用C++的命名空间std
int main()
{
    long int i;
    double bonus1, bonus2, bonus4, bonus6, bonus10,bonus;   
    bonus1 = 100000* 0.1;
    bonus2 = bonus1 + (i - 100000)*0.075;
    bonus4 = bonus2 + (i - 200000)*0.05;
    bonus6 = bonus4 + (i - 400000)*0.03;
    bonus10 = bonus6 + (i - 400000)*0.015;
    cout << "利润：";
    cin >> i;
    if (i <=100000)
        bonus = i*0.1;
    else if ( i <= 200000)
        bonus = bonus1+(i-100000)*0.75;
    else if (i <= 400000)
        bonus = bonus2+(i-200000)*0.05;
    else if (i <= 600000)
        bonus = bonus4+(i-400000)*0.03;
    else if (i <= 1000000)
        bonus = bonus6+(i-600000)*0.015;
    else
        bonus = bonus10+(i-1000000)*0.01;

    cout << "奖金(bonus)："  << bonus << endl;
    return 0;
}