各位，有人会写吗，用c语言

有没有人会用if语句和switch语句来解决该题，谢谢大家啦

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#include<stdio.h>

int main()
{
        double I,J;
        printf("请输入当月利润:");
        scanf("%lf",&I);
        if(I<=100000)
            J=I*0.1;
        else if(I<=200000)
            J=100000*0.1+(I-100000)*0.075;
        else if(I<=400000)
            J=100000*0.1+(200000-100000)*0.075+(I-200000)*0.05;
        else if(I<=600000)
            J=100000*0.1+(200000-100000)*0.075+(400000-200000)*0.05+(I-400000)*0.03;
        else if(I<=1000000)
            J=100000*0.1+(200000-100000)*0.075+(400000-200000)*0.05+(600000-400000)*0.03+(I-600000)*0.015;
        else
            J=100000*0.1+(200000-100000)*0.075+(400000-200000)*0.05+(600000-400000)*0.03+(1000000-600000)*0.015+(I-1000000)*0.01;
        printf("应得的奖金是:%f\n",J);
        return 0;        
}