存款利息计算

存款利息计算
（谭浩强p15）

#include
#include
#define RATE_ONE 0.015
#define RATE_TWO 0.021
#define RATE_THREE 0.0275
#define RATE_FIVE 0.03
#define RATE_HUO 0.0035
double huoqi(double money,int n){
	double sum=money*pow((1+RATE_HUO/4),4*n);
	return sum;
}
double siqi(double money,int n){
	double sum=money*(1+n*RATE_FIVE);
	return sum;
}
double fenqi(double money,int n,int m){//m是先存n年期
	 double sum1;
	 double sum;
	 switch(m){
	 case 2:{
			sum1=money*(1+m*RATE_TWO);
			sum=sum1*(1+(n-m)*RATE_THREE);
			}break;
	 case 3:{
			sum1=money*(1+m*RATE_THREE);
			sum=sum1*(1+(n-m)*RATE_TWO);
			}break;
	 case 1:{
		 sum=money*pow((1+RATE_ONE),n);
			}break;
	 }
		 return sum;

}
int main(){
	printf("一次存五年：%lf\n",siqi(1000,5));
	printf("先存两年期，后存三年期：%lf\n",fenqi(1000,5,2));
	printf("先存三年期，再存两年期:%lf\n",fenqi(1000,5,3));
	printf("存一年期，连存五次:%lf\n",fenqi(1000,5,1));
	printf("活期存款:%lf\n",huoqi(1000,5));
}