c语言：编写程序，输入月薪数a，计算并输出税率、应缴税款和实得奖金数。

#include <stdio.h>

void main()

{

double a, rate

int c,tax,profit

printf("输入奖金数：")

scanf("%lf",&a)

if(a>=5000)c=10

else c=a/500

switch(c) {

case 0: rate=0break

case 1: rate=0.05break

case 2:

case 3:

case 4: rate=0.08break

case 5:

case 6:

case 7:

case 8:

case 9: rate=0.10break

case 10: rate=0.15break

}

printf("%d",c)

tax=(a*rate)

profit=(int)(a-tax)

printf("税率为%lf,应缴税款为%d,实得奖金数为%d\n",rate,tax,profit)

}

#include<stdio.h>

int main()

{ 

int I

double S=0 //定义成double才能看到小数部分，不然会出现数据丢失

printf("Please input the Profit:")

scanf("%d",&I)

    if(I<=100000)

S=I*0.1

    else if(I>100000&&I<=200000)

S=100000*0.1+(I-100000)*0.075

    else if(I>200000&&I<=400000)

S=100000*0.1+100000*0.075+(I-200000)*0.05

    else if(I>400000&&I<=600000)

S=100000*0.1+100000*0.075+200000*0.05+(I-400000)*0.03

    else if(I>600000&&I<=1000000)

S=100000*0.1+100000*0.075+200000*0.05+200000*0.03+(I-600000)*0.015

    else //这里不要有判断了

S=100000*0.1+100000*0.075+200000*0.05+200000*0.03+400000*0.015+(I-1000000)*0.001

printf("S=%lf\n", S )

return 0

}

---