0701卷

#include <stdio.h>
//求最终本息 
double fun(double sum,double q )
{
return sum-q;
     
}
int main()
{
//m表示本金，k表示年利率，t表示利息，q表示利息税 
double m,k,t,sum,q;
int n;
printf("请输入要存储的本金金额："); 
scanf("%lf",&m);
printf("请输入要存储的年数：");
scanf("%d",&n);
//判断 
if(m>=0 && (n>=1 && n<=10)) 
{
switch(n)
         {
         case 1:
              k=2.52/100;
              break;
         case 2:
              k=3.06/100;
         case 3:
              k=3.69/100;
              break;
         default:
                 k=4.14/100;
         }
         printf("年利率为：%lf\n",k);
         //求总金额 
         for(int i=0;i<n;i++)
         {
          sum=m*(1+k);
          //若存储年份大于1年的 
          if(i>1)
          sum*=(1+k);    
          }
          //利息 
          t=sum-m;
          //利息税 
          q=t*0.2;
          printf("存储利息为：%lf\n",t);
          printf("利息税额为：%lf\n",q);                             
}
else 
     printf("你输入的信息有误!");
printf("最后的本息为:%lf",fun(sum,q));
getchar();
getchar();
}