11223399999999

111111111111111111111111111111111111111111111111111111湊字

switch的话，将收入除以1000后进行switch
if...else...版本

#include <stdio.h>
int main()
{
    float income,tax;
    printf("请输入收入:");
    scanf("%f",&income);
    if(income<1000)
        tax = 0;
    else if(income<2000)
        tax = 1000*0.05;
    else if(income<3000)
        tax = 50 + (income-2000)*0.1;
    else if(income < 6000)
        tax = 150 + (income-3000)*0.15;
    else
        tax = 600 + (income-6000)*0.2;
    printf("交税%.2f元",tax);
    return 0;
}

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